130350020

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 278833968

約数和(自身を除く): 148483948

約数列:

[1, 2, 4, 5, 10, 20, 113, 137, 226, 274, 421, 452, 548, 565, 685, 842, 1130, 1370, 1684, 2105, 2260, 2740, 4210, 8420, 15481, 30962, 47573, 57677, 61924, 77405, 95146, 115354, 154810, 190292, 230708, 237865, 288385, 309620, 475730, 576770, 951460, 1153540, 6517501, 13035002, 26070004, 32587505, 65175010, 130350020]

約数ペア:

[(1, 130350020), (2, 65175010), (4, 32587505), (5, 26070004), (10, 13035002), (20, 6517501), (113, 1153540), (137, 951460), (226, 576770), (274, 475730), (421, 309620), (452, 288385), (548, 237865), (565, 230708), (685, 190292), (842, 154810), (1130, 115354), (1370, 95146), (1684, 77405), (2105, 61924), (2260, 57677), (2740, 47573), (4210, 30962), (8420, 15481)]