21516690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55171}}^1$

素因数の和:55194

約数の個数: 32

約数和(自身を含む): 55613376

約数和(自身を除く): 34096686

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55171, 110342, 165513, 275855, 331026, 551710, 717223, 827565, 1434446, 1655130, 2151669, 3586115, 4303338, 7172230, 10758345, 21516690]

約数ペア:

[(1, 21516690), (2, 10758345), (3, 7172230), (5, 4303338), (6, 3586115), (10, 2151669), (13, 1655130), (15, 1434446), (26, 827565), (30, 717223), (39, 551710), (65, 331026), (78, 275855), (130, 165513), (195, 110342), (390, 55171)]