678702020

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{571}}^1\times {\mathrm{577}}^1$

素因数の和:1260

約数の個数: 48

約数和(自身を含む): 1444130688

約数和(自身を除く): 765428668

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 571, 577, 1030, 1142, 1154, 2060, 2284, 2308, 2855, 2885, 5710, 5770, 11420, 11540, 58813, 59431, 117626, 118862, 235252, 237724, 294065, 297155, 329467, 588130, 594310, 658934, 1176260, 1188620, 1317868, 1647335, 3294670, 6589340, 33935101, 67870202, 135740404, 169675505, 339351010, 678702020]

約数ペア:

[(1, 678702020), (2, 339351010), (4, 169675505), (5, 135740404), (10, 67870202), (20, 33935101), (103, 6589340), (206, 3294670), (412, 1647335), (515, 1317868), (571, 1188620), (577, 1176260), (1030, 658934), (1142, 594310), (1154, 588130), (2060, 329467), (2284, 297155), (2308, 294065), (2855, 237724), (2885, 235252), (5710, 118862), (5770, 117626), (11420, 59431), (11540, 58813)]