90177760

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{18181}}^1$

素因数の和:18227

約数の個数: 48

約数和(自身を含む): 219929472

約数和(自身を除く): 129751712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 18181, 36362, 72724, 90905, 145448, 181810, 290896, 363620, 563611, 581792, 727240, 1127222, 1454480, 2254444, 2818055, 2908960, 4508888, 5636110, 9017776, 11272220, 18035552, 22544440, 45088880, 90177760]

約数ペア:

[(1, 90177760), (2, 45088880), (4, 22544440), (5, 18035552), (8, 11272220), (10, 9017776), (16, 5636110), (20, 4508888), (31, 2908960), (32, 2818055), (40, 2254444), (62, 1454480), (80, 1127222), (124, 727240), (155, 581792), (160, 563611), (248, 363620), (310, 290896), (496, 181810), (620, 145448), (992, 90905), (1240, 72724), (2480, 36362), (4960, 18181)]