287745820

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1\times {\mathrm{433}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 612460800

約数和(自身を除く): 324714980

約数列:

[1, 2, 4, 5, 10, 20, 149, 223, 298, 433, 446, 596, 745, 866, 892, 1115, 1490, 1732, 2165, 2230, 2980, 4330, 4460, 8660, 33227, 64517, 66454, 96559, 129034, 132908, 166135, 193118, 258068, 322585, 332270, 386236, 482795, 645170, 664540, 965590, 1290340, 1931180, 14387291, 28774582, 57549164, 71936455, 143872910, 287745820]

約数ペア:

[(1, 287745820), (2, 143872910), (4, 71936455), (5, 57549164), (10, 28774582), (20, 14387291), (149, 1931180), (223, 1290340), (298, 965590), (433, 664540), (446, 645170), (596, 482795), (745, 386236), (866, 332270), (892, 322585), (1115, 258068), (1490, 193118), (1732, 166135), (2165, 132908), (2230, 129034), (2980, 96559), (4330, 66454), (4460, 64517), (8660, 33227)]