129624940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{72823}}^1$

素因数の和:72921

約数の個数: 24

約数和(自身を含む): 275274720

約数和(自身を除く): 145649780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 72823, 145646, 291292, 364115, 728230, 1456460, 6481247, 12962494, 25924988, 32406235, 64812470, 129624940]

約数ペア:

[(1, 129624940), (2, 64812470), (4, 32406235), (5, 25924988), (10, 12962494), (20, 6481247), (89, 1456460), (178, 728230), (356, 364115), (445, 291292), (890, 145646), (1780, 72823)]