20299840

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 112

約数和(自身を含む): 54132480

約数和(自身を除く): 33832640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 73, 79, 80, 88, 110, 146, 158, 160, 176, 220, 292, 316, 320, 352, 365, 395, 440, 584, 632, 704, 730, 790, 803, 869, 880, 1168, 1264, 1460, 1580, 1606, 1738, 1760, 2336, 2528, 2920, 3160, 3212, 3476, 3520, 4015, 4345, 4672, 5056, 5767, 5840, 6320, 6424, 6952, 8030, 8690, 11534, 11680, 12640, 12848, 13904, 16060, 17380, 23068, 23360, 25280, 25696, 27808, 28835, 32120, 34760, 46136, 51392, 55616, 57670, 63437, 64240, 69520, 92272, 115340, 126874, 128480, 139040, 184544, 230680, 253748, 256960, 278080, 317185, 369088, 461360, 507496, 634370, 922720, 1014992, 1268740, 1845440, 2029984, 2537480, 4059968, 5074960, 10149920, 20299840]

約数ペア:

[(1, 20299840), (2, 10149920), (4, 5074960), (5, 4059968), (8, 2537480), (10, 2029984), (11, 1845440), (16, 1268740), (20, 1014992), (22, 922720), (32, 634370), (40, 507496), (44, 461360), (55, 369088), (64, 317185), (73, 278080), (79, 256960), (80, 253748), (88, 230680), (110, 184544), (146, 139040), (158, 128480), (160, 126874), (176, 115340), (220, 92272), (292, 69520), (316, 64240), (320, 63437), (352, 57670), (365, 55616), (395, 51392), (440, 46136), (584, 34760), (632, 32120), (704, 28835), (730, 27808), (790, 25696), (803, 25280), (869, 23360), (880, 23068), (1168, 17380), (1264, 16060), (1460, 13904), (1580, 12848), (1606, 12640), (1738, 11680), (1760, 11534), (2336, 8690), (2528, 8030), (2920, 6952), (3160, 6424), (3212, 6320), (3476, 5840), (3520, 5767), (4015, 5056), (4345, 4672)]