641440863

素因数分解:

$3^4\times 7^1\times {\mathrm{919}}^1\times {\mathrm{1231}}^1$

素因数の和:2169

約数の個数: 40

約数和(自身を含む): 1097169920

約数和(自身を除く): 455729057

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 919, 1231, 2757, 3693, 6433, 8271, 8617, 11079, 19299, 24813, 25851, 33237, 57897, 74439, 77553, 99711, 173691, 232659, 521073, 697977, 1131289, 3393867, 7919023, 10181601, 23757069, 30544803, 71271207, 91634409, 213813621, 641440863]

約数ペア:

[(1, 641440863), (3, 213813621), (7, 91634409), (9, 71271207), (21, 30544803), (27, 23757069), (63, 10181601), (81, 7919023), (189, 3393867), (567, 1131289), (919, 697977), (1231, 521073), (2757, 232659), (3693, 173691), (6433, 99711), (8271, 77553), (8617, 74439), (11079, 57897), (19299, 33237), (24813, 25851)]