21404624

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{487}}^1$

素因数の和:603

約数の個数: 40

約数和(自身を含む): 43205568

約数和(自身を除く): 21800944

約数列:

[1, 2, 4, 8, 16, 41, 67, 82, 134, 164, 268, 328, 487, 536, 656, 974, 1072, 1948, 2747, 3896, 5494, 7792, 10988, 19967, 21976, 32629, 39934, 43952, 65258, 79868, 130516, 159736, 261032, 319472, 522064, 1337789, 2675578, 5351156, 10702312, 21404624]

約数ペア:

[(1, 21404624), (2, 10702312), (4, 5351156), (8, 2675578), (16, 1337789), (41, 522064), (67, 319472), (82, 261032), (134, 159736), (164, 130516), (268, 79868), (328, 65258), (487, 43952), (536, 39934), (656, 32629), (974, 21976), (1072, 19967), (1948, 10988), (2747, 7792), (3896, 5494)]