201721390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53507}}^1$

素因数の和:53556

約数の個数: 32

約数和(自身を含む): 404520480

約数和(自身を除く): 202799090

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 53507, 107014, 267535, 535070, 695591, 1391182, 1551703, 3103406, 3477955, 6955910, 7758515, 15517030, 20172139, 40344278, 100860695, 201721390]

約数ペア:

[(1, 201721390), (2, 100860695), (5, 40344278), (10, 20172139), (13, 15517030), (26, 7758515), (29, 6955910), (58, 3477955), (65, 3103406), (130, 1551703), (145, 1391182), (290, 695591), (377, 535070), (754, 267535), (1885, 107014), (3770, 53507)]