91420780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{21871}}^1$

素因数の和:21910

約数の個数: 48

約数和(自身を含む): 220469760

約数和(自身を除く): 129048980

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, 21871, 43742, 87484, 109355, 218710, 240581, 415549, 437420, 481162, 831098, 962324, 1202905, 1662196, 2077745, 2405810, 4155490, 4571039, 4811620, 8310980, 9142078, 18284156, 22855195, 45710390, 91420780]

約数ペア:

[(1, 91420780), (2, 45710390), (4, 22855195), (5, 18284156), (10, 9142078), (11, 8310980), (19, 4811620), (20, 4571039), (22, 4155490), (38, 2405810), (44, 2077745), (55, 1662196), (76, 1202905), (95, 962324), (110, 831098), (190, 481162), (209, 437420), (220, 415549), (380, 240581), (418, 218710), (836, 109355), (1045, 87484), (2090, 43742), (4180, 21871)]