81440289

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{22679}}^1$

素因数の和:22714

約数の個数: 32

約数和(自身を含む): 145152000

約数和(自身を除く): 63711711

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 22679, 68037, 158753, 204111, 430901, 476259, 612333, 1292703, 1428777, 3016307, 3878109, 4286331, 9048921, 11634327, 27146763, 81440289]

約数ペア:

[(1, 81440289), (3, 27146763), (7, 11634327), (9, 9048921), (19, 4286331), (21, 3878109), (27, 3016307), (57, 1428777), (63, 1292703), (133, 612333), (171, 476259), (189, 430901), (399, 204111), (513, 158753), (1197, 68037), (3591, 22679)]