81461940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193957}}^1$

素因数の和:193976

約数の個数: 48

約数和(自身を含む): 260679552

約数和(自身を除く): 179217612

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193957, 387914, 581871, 775828, 969785, 1163742, 1357699, 1939570, 2327484, 2715398, 2909355, 3879140, 4073097, 5430796, 5818710, 6788495, 8146194, 11637420, 13576990, 16292388, 20365485, 27153980, 40730970, 81461940]

約数ペア:

[(1, 81461940), (2, 40730970), (3, 27153980), (4, 20365485), (5, 16292388), (6, 13576990), (7, 11637420), (10, 8146194), (12, 6788495), (14, 5818710), (15, 5430796), (20, 4073097), (21, 3879140), (28, 2909355), (30, 2715398), (35, 2327484), (42, 1939570), (60, 1357699), (70, 1163742), (84, 969785), (105, 775828), (140, 581871), (210, 387914), (420, 193957)]