20986890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 31267830

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 59, 71, 118, 142, 167, 177, 213, 295, 334, 354, 355, 426, 501, 590, 710, 835, 885, 1002, 1065, 1670, 1770, 2130, 2505, 4189, 5010, 8378, 9853, 11857, 12567, 19706, 20945, 23714, 25134, 29559, 35571, 41890, 49265, 59118, 59285, 62835, 71142, 98530, 118570, 125670, 147795, 177855, 295590, 355710, 699563, 1399126, 2098689, 3497815, 4197378, 6995630, 10493445, 20986890]

約数ペア:

[(1, 20986890), (2, 10493445), (3, 6995630), (5, 4197378), (6, 3497815), (10, 2098689), (15, 1399126), (30, 699563), (59, 355710), (71, 295590), (118, 177855), (142, 147795), (167, 125670), (177, 118570), (213, 98530), (295, 71142), (334, 62835), (354, 59285), (355, 59118), (426, 49265), (501, 41890), (590, 35571), (710, 29559), (835, 25134), (885, 23714), (1002, 20945), (1065, 19706), (1670, 12567), (1770, 11857), (2130, 9853), (2505, 8378), (4189, 5010)]