21498759

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{353}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 31919472

約数和(自身を除く): 10420713

約数列:

[1, 3, 9, 67, 101, 201, 303, 353, 603, 909, 1059, 3177, 6767, 20301, 23651, 35653, 60903, 70953, 106959, 212859, 320877, 2388751, 7166253, 21498759]

約数ペア:

[(1, 21498759), (3, 7166253), (9, 2388751), (67, 320877), (101, 212859), (201, 106959), (303, 70953), (353, 60903), (603, 35653), (909, 23651), (1059, 20301), (3177, 6767)]