256399825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 360976896

約数和(自身を除く): 104577071

約数列:

[1, 5, 11, 25, 37, 55, 113, 185, 223, 275, 407, 565, 925, 1115, 1243, 2035, 2453, 2825, 4181, 5575, 6215, 8251, 10175, 12265, 20905, 25199, 31075, 41255, 45991, 61325, 90761, 104525, 125995, 206275, 229955, 277189, 453805, 629975, 932363, 1149775, 1385945, 2269025, 4661815, 6929725, 10255993, 23309075, 51279965, 256399825]

約数ペア:

[(1, 256399825), (5, 51279965), (11, 23309075), (25, 10255993), (37, 6929725), (55, 4661815), (113, 2269025), (185, 1385945), (223, 1149775), (275, 932363), (407, 629975), (565, 453805), (925, 277189), (1115, 229955), (1243, 206275), (2035, 125995), (2453, 104525), (2825, 90761), (4181, 61325), (5575, 45991), (6215, 41255), (8251, 31075), (10175, 25199), (12265, 20905)]