18690320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:408

約数の個数: 80

約数和(自身を含む): 48264768

約数和(自身を除く): 29574448

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 67, 80, 88, 110, 134, 176, 220, 268, 317, 335, 440, 536, 634, 670, 737, 880, 1072, 1268, 1340, 1474, 1585, 2536, 2680, 2948, 3170, 3487, 3685, 5072, 5360, 5896, 6340, 6974, 7370, 11792, 12680, 13948, 14740, 17435, 21239, 25360, 27896, 29480, 34870, 42478, 55792, 58960, 69740, 84956, 106195, 139480, 169912, 212390, 233629, 278960, 339824, 424780, 467258, 849560, 934516, 1168145, 1699120, 1869032, 2336290, 3738064, 4672580, 9345160, 18690320]

約数ペア:

[(1, 18690320), (2, 9345160), (4, 4672580), (5, 3738064), (8, 2336290), (10, 1869032), (11, 1699120), (16, 1168145), (20, 934516), (22, 849560), (40, 467258), (44, 424780), (55, 339824), (67, 278960), (80, 233629), (88, 212390), (110, 169912), (134, 139480), (176, 106195), (220, 84956), (268, 69740), (317, 58960), (335, 55792), (440, 42478), (536, 34870), (634, 29480), (670, 27896), (737, 25360), (880, 21239), (1072, 17435), (1268, 14740), (1340, 13948), (1474, 12680), (1585, 11792), (2536, 7370), (2680, 6974), (2948, 6340), (3170, 5896), (3487, 5360), (3685, 5072)]