28635640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:604

約数の個数: 64

約数和(自身を含む): 70917120

約数和(自身を除く): 42281480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 151, 220, 302, 431, 440, 604, 755, 862, 1208, 1510, 1661, 1724, 2155, 3020, 3322, 3448, 4310, 4741, 6040, 6644, 8305, 8620, 9482, 13288, 16610, 17240, 18964, 23705, 33220, 37928, 47410, 65081, 66440, 94820, 130162, 189640, 260324, 325405, 520648, 650810, 715891, 1301620, 1431782, 2603240, 2863564, 3579455, 5727128, 7158910, 14317820, 28635640]

約数ペア:

[(1, 28635640), (2, 14317820), (4, 7158910), (5, 5727128), (8, 3579455), (10, 2863564), (11, 2603240), (20, 1431782), (22, 1301620), (40, 715891), (44, 650810), (55, 520648), (88, 325405), (110, 260324), (151, 189640), (220, 130162), (302, 94820), (431, 66440), (440, 65081), (604, 47410), (755, 37928), (862, 33220), (1208, 23705), (1510, 18964), (1661, 17240), (1724, 16610), (2155, 13288), (3020, 9482), (3322, 8620), (3448, 8305), (4310, 6644), (4741, 6040)]