21190010

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1$

素因数の和:946

約数の個数: 32

約数和(自身を含む): 39949200

約数和(自身を除く): 18759190

約数列:

[1, 2, 5, 10, 29, 58, 89, 145, 178, 290, 445, 821, 890, 1642, 2581, 4105, 5162, 8210, 12905, 23809, 25810, 47618, 73069, 119045, 146138, 238090, 365345, 730690, 2119001, 4238002, 10595005, 21190010]

約数ペア:

[(1, 21190010), (2, 10595005), (5, 4238002), (10, 2119001), (29, 730690), (58, 365345), (89, 238090), (145, 146138), (178, 119045), (290, 73069), (445, 47618), (821, 25810), (890, 23809), (1642, 12905), (2581, 8210), (4105, 5162)]