21680067140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{12179813}}^1$

素因数の和:12179911

約数の個数: 24

約数和(自身を含む): 46039696920

約数和(自身を除く): 24359629780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 12179813, 24359626, 48719252, 60899065, 121798130, 243596260, 1084003357, 2168006714, 4336013428, 5420016785, 10840033570, 21680067140]

約数ペア:

[(1, 21680067140), (2, 10840033570), (4, 5420016785), (5, 4336013428), (10, 2168006714), (20, 1084003357), (89, 243596260), (178, 121798130), (356, 60899065), (445, 48719252), (890, 24359626), (1780, 12179813)]