21695740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5801}}^1$

素因数の和:5838

約数の個数: 48

約数和(自身を含む): 52635744

約数和(自身を除く): 30940004

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5801, 11602, 23204, 29005, 58010, 63811, 98617, 116020, 127622, 197234, 255244, 319055, 394468, 493085, 638110, 986170, 1084787, 1276220, 1972340, 2169574, 4339148, 5423935, 10847870, 21695740]

約数ペア:

[(1, 21695740), (2, 10847870), (4, 5423935), (5, 4339148), (10, 2169574), (11, 1972340), (17, 1276220), (20, 1084787), (22, 986170), (34, 638110), (44, 493085), (55, 394468), (68, 319055), (85, 255244), (110, 197234), (170, 127622), (187, 116020), (220, 98617), (340, 63811), (374, 58010), (748, 29005), (935, 23204), (1870, 11602), (3740, 5801)]