81210560

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^3\times {\mathrm{37}}^1$

素因数の和:111

約数の個数: 112

約数和(自身を含む): 209641440

約数和(自身を除く): 128430880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 37, 38, 40, 64, 74, 76, 80, 95, 148, 152, 160, 185, 190, 296, 304, 320, 361, 370, 380, 592, 608, 703, 722, 740, 760, 1184, 1216, 1406, 1444, 1480, 1520, 1805, 2368, 2812, 2888, 2960, 3040, 3515, 3610, 5624, 5776, 5920, 6080, 6859, 7030, 7220, 11248, 11552, 11840, 13357, 13718, 14060, 14440, 22496, 23104, 26714, 27436, 28120, 28880, 34295, 44992, 53428, 54872, 56240, 57760, 66785, 68590, 106856, 109744, 112480, 115520, 133570, 137180, 213712, 219488, 224960, 253783, 267140, 274360, 427424, 438976, 507566, 534280, 548720, 854848, 1015132, 1068560, 1097440, 1268915, 2030264, 2137120, 2194880, 2537830, 4060528, 4274240, 5075660, 8121056, 10151320, 16242112, 20302640, 40605280, 81210560]

約数ペア:

[(1, 81210560), (2, 40605280), (4, 20302640), (5, 16242112), (8, 10151320), (10, 8121056), (16, 5075660), (19, 4274240), (20, 4060528), (32, 2537830), (37, 2194880), (38, 2137120), (40, 2030264), (64, 1268915), (74, 1097440), (76, 1068560), (80, 1015132), (95, 854848), (148, 548720), (152, 534280), (160, 507566), (185, 438976), (190, 427424), (296, 274360), (304, 267140), (320, 253783), (361, 224960), (370, 219488), (380, 213712), (592, 137180), (608, 133570), (703, 115520), (722, 112480), (740, 109744), (760, 106856), (1184, 68590), (1216, 66785), (1406, 57760), (1444, 56240), (1480, 54872), (1520, 53428), (1805, 44992), (2368, 34295), (2812, 28880), (2888, 28120), (2960, 27436), (3040, 26714), (3515, 23104), (3610, 22496), (5624, 14440), (5776, 14060), (5920, 13718), (6080, 13357), (6859, 11840), (7030, 11552), (7220, 11248)]