18681920

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{739}}^1$

素因数の和:835

約数の個数: 56

約数和(自身を含む): 45110400

約数和(自身を除く): 26428480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 739, 790, 1264, 1478, 1580, 2528, 2956, 3160, 3695, 5056, 5912, 6320, 7390, 11824, 12640, 14780, 23648, 25280, 29560, 47296, 58381, 59120, 116762, 118240, 233524, 236480, 291905, 467048, 583810, 934096, 1167620, 1868192, 2335240, 3736384, 4670480, 9340960, 18681920]

約数ペア:

[(1, 18681920), (2, 9340960), (4, 4670480), (5, 3736384), (8, 2335240), (10, 1868192), (16, 1167620), (20, 934096), (32, 583810), (40, 467048), (64, 291905), (79, 236480), (80, 233524), (158, 118240), (160, 116762), (316, 59120), (320, 58381), (395, 47296), (632, 29560), (739, 25280), (790, 23648), (1264, 14780), (1478, 12640), (1580, 11824), (2528, 7390), (2956, 6320), (3160, 5912), (3695, 5056)]