21154617

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 35283456

約数和(自身を除く): 14128839

約数列:

[1, 3, 9, 11, 31, 33, 61, 93, 99, 113, 183, 279, 339, 341, 549, 671, 1017, 1023, 1243, 1891, 2013, 3069, 3503, 3729, 5673, 6039, 6893, 10509, 11187, 17019, 20679, 20801, 31527, 38533, 62037, 62403, 75823, 115599, 187209, 213683, 227469, 346797, 641049, 682407, 1923147, 2350513, 7051539, 21154617]

約数ペア:

[(1, 21154617), (3, 7051539), (9, 2350513), (11, 1923147), (31, 682407), (33, 641049), (61, 346797), (93, 227469), (99, 213683), (113, 187209), (183, 115599), (279, 75823), (339, 62403), (341, 62037), (549, 38533), (671, 31527), (1017, 20801), (1023, 20679), (1243, 17019), (1891, 11187), (2013, 10509), (3069, 6893), (3503, 6039), (3729, 5673)]