128523520

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 329656320

約数和(自身を除く): 201132800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 64, 79, 80, 82, 124, 128, 155, 158, 160, 164, 205, 248, 256, 310, 316, 320, 328, 395, 410, 496, 620, 632, 640, 656, 790, 820, 992, 1240, 1264, 1271, 1280, 1312, 1580, 1640, 1984, 2449, 2480, 2528, 2542, 2624, 3160, 3239, 3280, 3968, 4898, 4960, 5056, 5084, 5248, 6320, 6355, 6478, 6560, 7936, 9796, 9920, 10112, 10168, 10496, 12245, 12640, 12710, 12956, 13120, 16195, 19592, 19840, 20224, 20336, 24490, 25280, 25420, 25912, 26240, 32390, 39184, 39680, 40672, 48980, 50560, 50840, 51824, 52480, 64780, 78368, 81344, 97960, 100409, 101120, 101680, 103648, 129560, 156736, 162688, 195920, 200818, 203360, 207296, 259120, 313472, 325376, 391840, 401636, 406720, 414592, 502045, 518240, 626944, 783680, 803272, 813440, 829184, 1004090, 1036480, 1567360, 1606544, 1626880, 2008180, 2072960, 3134720, 3213088, 4016360, 4145920, 6426176, 8032720, 12852352, 16065440, 25704704, 32130880, 64261760, 128523520]

約数ペア:

[(1, 128523520), (2, 64261760), (4, 32130880), (5, 25704704), (8, 16065440), (10, 12852352), (16, 8032720), (20, 6426176), (31, 4145920), (32, 4016360), (40, 3213088), (41, 3134720), (62, 2072960), (64, 2008180), (79, 1626880), (80, 1606544), (82, 1567360), (124, 1036480), (128, 1004090), (155, 829184), (158, 813440), (160, 803272), (164, 783680), (205, 626944), (248, 518240), (256, 502045), (310, 414592), (316, 406720), (320, 401636), (328, 391840), (395, 325376), (410, 313472), (496, 259120), (620, 207296), (632, 203360), (640, 200818), (656, 195920), (790, 162688), (820, 156736), (992, 129560), (1240, 103648), (1264, 101680), (1271, 101120), (1280, 100409), (1312, 97960), (1580, 81344), (1640, 78368), (1984, 64780), (2449, 52480), (2480, 51824), (2528, 50840), (2542, 50560), (2624, 48980), (3160, 40672), (3239, 39680), (3280, 39184), (3968, 32390), (4898, 26240), (4960, 25912), (5056, 25420), (5084, 25280), (5248, 24490), (6320, 20336), (6355, 20224), (6478, 19840), (6560, 19592), (7936, 16195), (9796, 13120), (9920, 12956), (10112, 12710), (10168, 12640), (10496, 12245)]