690438020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{2459}}^1$

素因数の和:2708

約数の個数: 48

約数和(自身を含む): 1475409600

約数和(自身を除く): 784971580

約数列:

[1, 2, 4, 5, 10, 20, 101, 139, 202, 278, 404, 505, 556, 695, 1010, 1390, 2020, 2459, 2780, 4918, 9836, 12295, 14039, 24590, 28078, 49180, 56156, 70195, 140390, 248359, 280780, 341801, 496718, 683602, 993436, 1241795, 1367204, 1709005, 2483590, 3418010, 4967180, 6836020, 34521901, 69043802, 138087604, 172609505, 345219010, 690438020]

約数ペア:

[(1, 690438020), (2, 345219010), (4, 172609505), (5, 138087604), (10, 69043802), (20, 34521901), (101, 6836020), (139, 4967180), (202, 3418010), (278, 2483590), (404, 1709005), (505, 1367204), (556, 1241795), (695, 993436), (1010, 683602), (1390, 496718), (2020, 341801), (2459, 280780), (2780, 248359), (4918, 140390), (9836, 70195), (12295, 56156), (14039, 49180), (24590, 28078)]