28075940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15773}}^1$

素因数の和:15871

約数の個数: 24

約数和(自身を含む): 59625720

約数和(自身を除く): 31549780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 15773, 31546, 63092, 78865, 157730, 315460, 1403797, 2807594, 5615188, 7018985, 14037970, 28075940]

約数ペア:

[(1, 28075940), (2, 14037970), (4, 7018985), (5, 5615188), (10, 2807594), (20, 1403797), (89, 315460), (178, 157730), (356, 78865), (445, 63092), (890, 31546), (1780, 15773)]