21000481215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10526557}}^1$

素因数の和:10526591

約数の個数: 32

約数和(自身を含む): 40421982720

約数和(自身を除く): 19421501505

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10526557, 31579671, 52632785, 73685899, 157898355, 200004583, 221057697, 368429495, 600013749, 1000022915, 1105288485, 1400032081, 3000068745, 4200096243, 7000160405, 21000481215]

約数ペア:

[(1, 21000481215), (3, 7000160405), (5, 4200096243), (7, 3000068745), (15, 1400032081), (19, 1105288485), (21, 1000022915), (35, 600013749), (57, 368429495), (95, 221057697), (105, 200004583), (133, 157898355), (285, 73685899), (399, 52632785), (665, 31579671), (1995, 10526557)]