20190719660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{499523}}^1$

素因数の和:499622

約数の個数: 48

約数和(自身を含む): 44309776896

約数和(自身を除く): 24119057236

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 860, 940, 2021, 4042, 8084, 10105, 20210, 40420, 499523, 999046, 1998092, 2497615, 4995230, 9990460, 21479489, 23477581, 42958978, 46955162, 85917956, 93910324, 107397445, 117387905, 214794890, 234775810, 429589780, 469551620, 1009535983, 2019071966, 4038143932, 5047679915, 10095359830, 20190719660]

約数ペア:

[(1, 20190719660), (2, 10095359830), (4, 5047679915), (5, 4038143932), (10, 2019071966), (20, 1009535983), (43, 469551620), (47, 429589780), (86, 234775810), (94, 214794890), (172, 117387905), (188, 107397445), (215, 93910324), (235, 85917956), (430, 46955162), (470, 42958978), (860, 23477581), (940, 21479489), (2021, 9990460), (4042, 4995230), (8084, 2497615), (10105, 1998092), (20210, 999046), (40420, 499523)]