21878290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 47775744

約数和(自身を除く): 25897454

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 107, 115, 127, 161, 214, 230, 254, 322, 535, 635, 749, 805, 889, 1070, 1270, 1498, 1610, 1778, 2461, 2921, 3745, 4445, 4922, 5842, 7490, 8890, 12305, 13589, 14605, 17227, 20447, 24610, 27178, 29210, 34454, 40894, 67945, 86135, 95123, 102235, 135890, 172270, 190246, 204470, 312547, 475615, 625094, 951230, 1562735, 2187829, 3125470, 4375658, 10939145, 21878290]

約数ペア:

[(1, 21878290), (2, 10939145), (5, 4375658), (7, 3125470), (10, 2187829), (14, 1562735), (23, 951230), (35, 625094), (46, 475615), (70, 312547), (107, 204470), (115, 190246), (127, 172270), (161, 135890), (214, 102235), (230, 95123), (254, 86135), (322, 67945), (535, 40894), (635, 34454), (749, 29210), (805, 27178), (889, 24610), (1070, 20447), (1270, 17227), (1498, 14605), (1610, 13589), (1778, 12305), (2461, 8890), (2921, 7490), (3745, 5842), (4445, 4922)]