51213040

素因数分解:

$2^4\times 5^1\times {\mathrm{640163}}^1$

素因数の和:640176

約数の個数: 20

約数和(自身を含む): 119070504

約数和(自身を除く): 67857464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640163, 1280326, 2560652, 3200815, 5121304, 6401630, 10242608, 12803260, 25606520, 51213040]

約数ペア:

[(1, 51213040), (2, 25606520), (4, 12803260), (5, 10242608), (8, 6401630), (10, 5121304), (16, 3200815), (20, 2560652), (40, 1280326), (80, 640163)]