72664940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{40823}}^1$

素因数の和:40921

約数の個数: 24

約数和(自身を含む): 154314720

約数和(自身を除く): 81649780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 40823, 81646, 163292, 204115, 408230, 816460, 3633247, 7266494, 14532988, 18166235, 36332470, 72664940]

約数ペア:

[(1, 72664940), (2, 36332470), (4, 18166235), (5, 14532988), (10, 7266494), (20, 3633247), (89, 816460), (178, 408230), (356, 204115), (445, 163292), (890, 81646), (1780, 40823)]