21537219

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{569}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 11732541

約数列:

[1, 3, 11, 31, 33, 37, 93, 111, 341, 407, 569, 1023, 1147, 1221, 1707, 3441, 6259, 12617, 17639, 18777, 21053, 37851, 52917, 63159, 194029, 231583, 582087, 652643, 694749, 1957929, 7179073, 21537219]

約数ペア:

[(1, 21537219), (3, 7179073), (11, 1957929), (31, 694749), (33, 652643), (37, 582087), (93, 231583), (111, 194029), (341, 63159), (407, 52917), (569, 37851), (1023, 21053), (1147, 18777), (1221, 17639), (1707, 12617), (3441, 6259)]