8991483380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{161543}}^1$

素因数の和:161597

約数の個数: 72

約数和(自身を含む): 21657234816

約数和(自身を除く): 12665751436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 121, 220, 230, 242, 253, 460, 484, 506, 605, 1012, 1210, 1265, 2420, 2530, 2783, 5060, 5566, 11132, 13915, 27830, 55660, 161543, 323086, 646172, 807715, 1615430, 1776973, 3230860, 3553946, 3715489, 7107892, 7430978, 8884865, 14861956, 17769730, 18577445, 19546703, 35539460, 37154890, 39093406, 40870379, 74309780, 78186812, 81740758, 97733515, 163481516, 195467030, 204351895, 390934060, 408703790, 449574169, 817407580, 899148338, 1798296676, 2247870845, 4495741690, 8991483380]

約数ペア:

[(1, 8991483380), (2, 4495741690), (4, 2247870845), (5, 1798296676), (10, 899148338), (11, 817407580), (20, 449574169), (22, 408703790), (23, 390934060), (44, 204351895), (46, 195467030), (55, 163481516), (92, 97733515), (110, 81740758), (115, 78186812), (121, 74309780), (220, 40870379), (230, 39093406), (242, 37154890), (253, 35539460), (460, 19546703), (484, 18577445), (506, 17769730), (605, 14861956), (1012, 8884865), (1210, 7430978), (1265, 7107892), (2420, 3715489), (2530, 3553946), (2783, 3230860), (5060, 1776973), (5566, 1615430), (11132, 807715), (13915, 646172), (27830, 323086), (55660, 161543)]