78974720

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:182

約数の個数: 144

約数和(自身を含む): 211921920

約数和(自身を除く): 132947200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 71, 79, 80, 88, 110, 128, 142, 158, 160, 176, 220, 256, 284, 316, 320, 352, 355, 395, 440, 568, 632, 640, 704, 710, 781, 790, 869, 880, 1136, 1264, 1280, 1408, 1420, 1562, 1580, 1738, 1760, 2272, 2528, 2816, 2840, 3124, 3160, 3476, 3520, 3905, 4345, 4544, 5056, 5609, 5680, 6248, 6320, 6952, 7040, 7810, 8690, 9088, 10112, 11218, 11360, 12496, 12640, 13904, 14080, 15620, 17380, 18176, 20224, 22436, 22720, 24992, 25280, 27808, 28045, 31240, 34760, 44872, 45440, 49984, 50560, 55616, 56090, 61699, 62480, 69520, 89744, 90880, 99968, 101120, 111232, 112180, 123398, 124960, 139040, 179488, 199936, 222464, 224360, 246796, 249920, 278080, 308495, 358976, 448720, 493592, 499840, 556160, 616990, 717952, 897440, 987184, 999680, 1112320, 1233980, 1435904, 1794880, 1974368, 2467960, 3589760, 3948736, 4935920, 7179520, 7897472, 9871840, 15794944, 19743680, 39487360, 78974720]

約数ペア:

[(1, 78974720), (2, 39487360), (4, 19743680), (5, 15794944), (8, 9871840), (10, 7897472), (11, 7179520), (16, 4935920), (20, 3948736), (22, 3589760), (32, 2467960), (40, 1974368), (44, 1794880), (55, 1435904), (64, 1233980), (71, 1112320), (79, 999680), (80, 987184), (88, 897440), (110, 717952), (128, 616990), (142, 556160), (158, 499840), (160, 493592), (176, 448720), (220, 358976), (256, 308495), (284, 278080), (316, 249920), (320, 246796), (352, 224360), (355, 222464), (395, 199936), (440, 179488), (568, 139040), (632, 124960), (640, 123398), (704, 112180), (710, 111232), (781, 101120), (790, 99968), (869, 90880), (880, 89744), (1136, 69520), (1264, 62480), (1280, 61699), (1408, 56090), (1420, 55616), (1562, 50560), (1580, 49984), (1738, 45440), (1760, 44872), (2272, 34760), (2528, 31240), (2816, 28045), (2840, 27808), (3124, 25280), (3160, 24992), (3476, 22720), (3520, 22436), (3905, 20224), (4345, 18176), (4544, 17380), (5056, 15620), (5609, 14080), (5680, 13904), (6248, 12640), (6320, 12496), (6952, 11360), (7040, 11218), (7810, 10112), (8690, 9088)]