64480775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 90470400

約数和(自身を除く): 25989625

約数列:

[1, 5, 19, 25, 29, 31, 95, 145, 151, 155, 475, 551, 589, 725, 755, 775, 899, 2755, 2869, 2945, 3775, 4379, 4495, 4681, 13775, 14345, 14725, 17081, 21895, 22475, 23405, 71725, 83201, 85405, 88939, 109475, 117025, 135749, 416005, 427025, 444695, 678745, 2080025, 2223475, 2579231, 3393725, 12896155, 64480775]

約数ペア:

[(1, 64480775), (5, 12896155), (19, 3393725), (25, 2579231), (29, 2223475), (31, 2080025), (95, 678745), (145, 444695), (151, 427025), (155, 416005), (475, 135749), (551, 117025), (589, 109475), (725, 88939), (755, 85405), (775, 83201), (899, 71725), (2755, 23405), (2869, 22475), (2945, 21895), (3775, 17081), (4379, 14725), (4495, 14345), (4681, 13775)]