21985150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{563}}^1$

素因数の和:657

約数の個数: 48

約数和(自身を含む): 45318528

約数和(自身を除く): 23333378

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 71, 110, 142, 275, 355, 550, 563, 710, 781, 1126, 1562, 1775, 2815, 3550, 3905, 5630, 6193, 7810, 12386, 14075, 19525, 28150, 30965, 39050, 39973, 61930, 79946, 154825, 199865, 309650, 399730, 439703, 879406, 999325, 1998650, 2198515, 4397030, 10992575, 21985150]

約数ペア:

[(1, 21985150), (2, 10992575), (5, 4397030), (10, 2198515), (11, 1998650), (22, 999325), (25, 879406), (50, 439703), (55, 399730), (71, 309650), (110, 199865), (142, 154825), (275, 79946), (355, 61930), (550, 39973), (563, 39050), (710, 30965), (781, 28150), (1126, 19525), (1562, 14075), (1775, 12386), (2815, 7810), (3550, 6193), (3905, 5630)]