645300640

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{98369}}^1$

素因数の和:98425

約数の個数: 48

約数和(自身を含む): 1561722120

約数和(自身を除く): 916421480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 6560, 98369, 196738, 393476, 491845, 786952, 983690, 1573904, 1967380, 3147808, 3934760, 4033129, 7869520, 8066258, 15739040, 16132516, 20165645, 32265032, 40331290, 64530064, 80662580, 129060128, 161325160, 322650320, 645300640]

約数ペア:

[(1, 645300640), (2, 322650320), (4, 161325160), (5, 129060128), (8, 80662580), (10, 64530064), (16, 40331290), (20, 32265032), (32, 20165645), (40, 16132516), (41, 15739040), (80, 8066258), (82, 7869520), (160, 4033129), (164, 3934760), (205, 3147808), (328, 1967380), (410, 1573904), (656, 983690), (820, 786952), (1312, 491845), (1640, 393476), (3280, 196738), (6560, 98369)]