21354327

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:420

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 12030633

約数列:

[1, 3, 9, 23, 27, 69, 137, 207, 251, 411, 621, 753, 1233, 2259, 3151, 3699, 5773, 6777, 9453, 17319, 28359, 34387, 51957, 85077, 103161, 155871, 309483, 790901, 928449, 2372703, 7118109, 21354327]

約数ペア:

[(1, 21354327), (3, 7118109), (9, 2372703), (23, 928449), (27, 790901), (69, 309483), (137, 155871), (207, 103161), (251, 85077), (411, 51957), (621, 34387), (753, 28359), (1233, 17319), (2259, 9453), (3151, 6777), (3699, 5773)]