21302380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2617}}^1$

素因数の和:2674

約数の個数: 48

約数和(自身を含む): 50139936

約数和(自身を除く): 28837556

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2617, 4070, 5234, 8140, 10468, 13085, 26170, 28787, 52340, 57574, 96829, 115148, 143935, 193658, 287870, 387316, 484145, 575740, 968290, 1065119, 1936580, 2130238, 4260476, 5325595, 10651190, 21302380]

約数ペア:

[(1, 21302380), (2, 10651190), (4, 5325595), (5, 4260476), (10, 2130238), (11, 1936580), (20, 1065119), (22, 968290), (37, 575740), (44, 484145), (55, 387316), (74, 287870), (110, 193658), (148, 143935), (185, 115148), (220, 96829), (370, 57574), (407, 52340), (740, 28787), (814, 26170), (1628, 13085), (2035, 10468), (2617, 8140), (4070, 5234)]