20803640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3637}}^1$

素因数の和:3672

約数の個数: 64

約数和(自身を含む): 55006560

約数和(自身を除く): 34202920

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3637, 5720, 7274, 14548, 18185, 29096, 36370, 40007, 47281, 72740, 80014, 94562, 145480, 160028, 189124, 200035, 236405, 320056, 378248, 400070, 472810, 520091, 800140, 945620, 1040182, 1600280, 1891240, 2080364, 2600455, 4160728, 5200910, 10401820, 20803640]

約数ペア:

[(1, 20803640), (2, 10401820), (4, 5200910), (5, 4160728), (8, 2600455), (10, 2080364), (11, 1891240), (13, 1600280), (20, 1040182), (22, 945620), (26, 800140), (40, 520091), (44, 472810), (52, 400070), (55, 378248), (65, 320056), (88, 236405), (104, 200035), (110, 189124), (130, 160028), (143, 145480), (220, 94562), (260, 80014), (286, 72740), (440, 47281), (520, 40007), (572, 36370), (715, 29096), (1144, 18185), (1430, 14548), (2860, 7274), (3637, 5720)]