81306940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28429}}^1$

素因数の和:28462

約数の個数: 48

約数和(自身を含む): 200602080

約数和(自身を除く): 119295140

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28429, 56858, 113716, 142145, 284290, 312719, 369577, 568580, 625438, 739154, 1250876, 1478308, 1563595, 1847885, 3127190, 3695770, 4065347, 6254380, 7391540, 8130694, 16261388, 20326735, 40653470, 81306940]

約数ペア:

[(1, 81306940), (2, 40653470), (4, 20326735), (5, 16261388), (10, 8130694), (11, 7391540), (13, 6254380), (20, 4065347), (22, 3695770), (26, 3127190), (44, 1847885), (52, 1563595), (55, 1478308), (65, 1250876), (110, 739154), (130, 625438), (143, 568580), (220, 369577), (260, 312719), (286, 284290), (572, 142145), (715, 113716), (1430, 56858), (2860, 28429)]