20188477640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1\times {\mathrm{12941}}^1$

素因数の和:13902

約数の個数: 64

約数和(自身を含む): 46535290560

約数和(自身を除く): 26346812920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 907, 1720, 1814, 3628, 4535, 7256, 9070, 12941, 18140, 25882, 36280, 39001, 51764, 64705, 78002, 103528, 129410, 156004, 195005, 258820, 312008, 390010, 517640, 556463, 780020, 1112926, 1560040, 2225852, 2782315, 4451704, 5564630, 11129260, 11737487, 22258520, 23474974, 46949948, 58687435, 93899896, 117374870, 234749740, 469499480, 504711941, 1009423882, 2018847764, 2523559705, 4037695528, 5047119410, 10094238820, 20188477640]

約数ペア:

[(1, 20188477640), (2, 10094238820), (4, 5047119410), (5, 4037695528), (8, 2523559705), (10, 2018847764), (20, 1009423882), (40, 504711941), (43, 469499480), (86, 234749740), (172, 117374870), (215, 93899896), (344, 58687435), (430, 46949948), (860, 23474974), (907, 22258520), (1720, 11737487), (1814, 11129260), (3628, 5564630), (4535, 4451704), (7256, 2782315), (9070, 2225852), (12941, 1560040), (18140, 1112926), (25882, 780020), (36280, 556463), (39001, 517640), (51764, 390010), (64705, 312008), (78002, 258820), (103528, 195005), (129410, 156004)]