81531840

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 224

約数和(自身を含む): 286755840

約数和(自身を除く): 205224000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 47, 48, 52, 60, 64, 65, 78, 80, 94, 96, 104, 120, 130, 139, 141, 156, 160, 188, 192, 195, 208, 235, 240, 260, 278, 282, 312, 320, 376, 390, 416, 417, 470, 480, 520, 556, 564, 611, 624, 695, 705, 752, 780, 832, 834, 940, 960, 1040, 1112, 1128, 1222, 1248, 1390, 1410, 1504, 1560, 1668, 1807, 1833, 1880, 2080, 2085, 2224, 2256, 2444, 2496, 2780, 2820, 3008, 3055, 3120, 3336, 3614, 3666, 3760, 4160, 4170, 4448, 4512, 4888, 5421, 5560, 5640, 6110, 6240, 6533, 6672, 7228, 7332, 7520, 8340, 8896, 9024, 9035, 9165, 9776, 10842, 11120, 11280, 12220, 12480, 13066, 13344, 14456, 14664, 15040, 16680, 18070, 18330, 19552, 19599, 21684, 22240, 22560, 24440, 26132, 26688, 27105, 28912, 29328, 32665, 33360, 36140, 36660, 39104, 39198, 43368, 44480, 45120, 48880, 52264, 54210, 57824, 58656, 65330, 66720, 72280, 73320, 78396, 84929, 86736, 97760, 97995, 104528, 108420, 115648, 117312, 130660, 133440, 144560, 146640, 156792, 169858, 173472, 195520, 195990, 209056, 216840, 254787, 261320, 289120, 293280, 313584, 339716, 346944, 391980, 418112, 424645, 433680, 509574, 522640, 578240, 586560, 627168, 679432, 783960, 849290, 867360, 1019148, 1045280, 1254336, 1273935, 1358864, 1567920, 1698580, 1734720, 2038296, 2090560, 2547870, 2717728, 3135840, 3397160, 4076592, 5095740, 5435456, 6271680, 6794320, 8153184, 10191480, 13588640, 16306368, 20382960, 27177280, 40765920, 81531840]

約数ペア:

[(1, 81531840), (2, 40765920), (3, 27177280), (4, 20382960), (5, 16306368), (6, 13588640), (8, 10191480), (10, 8153184), (12, 6794320), (13, 6271680), (15, 5435456), (16, 5095740), (20, 4076592), (24, 3397160), (26, 3135840), (30, 2717728), (32, 2547870), (39, 2090560), (40, 2038296), (47, 1734720), (48, 1698580), (52, 1567920), (60, 1358864), (64, 1273935), (65, 1254336), (78, 1045280), (80, 1019148), (94, 867360), (96, 849290), (104, 783960), (120, 679432), (130, 627168), (139, 586560), (141, 578240), (156, 522640), (160, 509574), (188, 433680), (192, 424645), (195, 418112), (208, 391980), (235, 346944), (240, 339716), (260, 313584), (278, 293280), (282, 289120), (312, 261320), (320, 254787), (376, 216840), (390, 209056), (416, 195990), (417, 195520), (470, 173472), (480, 169858), (520, 156792), (556, 146640), (564, 144560), (611, 133440), (624, 130660), (695, 117312), (705, 115648), (752, 108420), (780, 104528), (832, 97995), (834, 97760), (940, 86736), (960, 84929), (1040, 78396), (1112, 73320), (1128, 72280), (1222, 66720), (1248, 65330), (1390, 58656), (1410, 57824), (1504, 54210), (1560, 52264), (1668, 48880), (1807, 45120), (1833, 44480), (1880, 43368), (2080, 39198), (2085, 39104), (2224, 36660), (2256, 36140), (2444, 33360), (2496, 32665), (2780, 29328), (2820, 28912), (3008, 27105), (3055, 26688), (3120, 26132), (3336, 24440), (3614, 22560), (3666, 22240), (3760, 21684), (4160, 19599), (4170, 19552), (4448, 18330), (4512, 18070), (4888, 16680), (5421, 15040), (5560, 14664), (5640, 14456), (6110, 13344), (6240, 13066), (6533, 12480), (6672, 12220), (7228, 11280), (7332, 11120), (7520, 10842), (8340, 9776), (8896, 9165), (9024, 9035)]