161207440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65003}}^1$

素因数の和:65047

約数の個数: 40

約数和(自身を含む): 386903808

約数和(自身を除く): 225696368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 65003, 130006, 260012, 325015, 520024, 650030, 1040048, 1300060, 2015093, 2600120, 4030186, 5200240, 8060372, 10075465, 16120744, 20150930, 32241488, 40301860, 80603720, 161207440]

約数ペア:

[(1, 161207440), (2, 80603720), (4, 40301860), (5, 32241488), (8, 20150930), (10, 16120744), (16, 10075465), (20, 8060372), (31, 5200240), (40, 4030186), (62, 2600120), (80, 2015093), (124, 1300060), (155, 1040048), (248, 650030), (310, 520024), (496, 325015), (620, 260012), (1240, 130006), (2480, 65003)]