28871260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6907}}^1$

素因数の和:6946

約数の個数: 48

約数和(自身を含む): 69632640

約数和(自身を除く): 40761380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 6907, 13814, 27628, 34535, 69070, 75977, 131233, 138140, 151954, 262466, 303908, 379885, 524932, 656165, 759770, 1312330, 1443563, 1519540, 2624660, 2887126, 5774252, 7217815, 14435630, 28871260]

約数ペア:

[(1, 28871260), (2, 14435630), (4, 7217815), (5, 5774252), (10, 2887126), (11, 2624660), (19, 1519540), (20, 1443563), (22, 1312330), (38, 759770), (44, 656165), (55, 524932), (76, 379885), (95, 303908), (110, 262466), (190, 151954), (209, 138140), (220, 131233), (380, 75977), (418, 69070), (836, 34535), (1045, 27628), (2090, 13814), (4180, 6907)]