21653841

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{347}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 33140736

約数和(自身を除く): 11486895

約数列:

[1, 3, 11, 31, 33, 61, 93, 183, 341, 347, 671, 1023, 1041, 1891, 2013, 3817, 5673, 10757, 11451, 20801, 21167, 32271, 62403, 63501, 118327, 232837, 354981, 656177, 698511, 1968531, 7217947, 21653841]

約数ペア:

[(1, 21653841), (3, 7217947), (11, 1968531), (31, 698511), (33, 656177), (61, 354981), (93, 232837), (183, 118327), (341, 63501), (347, 62403), (671, 32271), (1023, 21167), (1041, 20801), (1891, 11451), (2013, 10757), (3817, 5673)]