8260840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 21490560

約数和(自身を除く): 13229720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 181, 280, 326, 362, 652, 724, 815, 905, 1141, 1267, 1304, 1448, 1630, 1810, 2282, 2534, 3260, 3620, 4564, 5068, 5705, 6335, 6520, 7240, 9128, 10136, 11410, 12670, 22820, 25340, 29503, 45640, 50680, 59006, 118012, 147515, 206521, 236024, 295030, 413042, 590060, 826084, 1032605, 1180120, 1652168, 2065210, 4130420, 8260840]

約数ペア:

[(1, 8260840), (2, 4130420), (4, 2065210), (5, 1652168), (7, 1180120), (8, 1032605), (10, 826084), (14, 590060), (20, 413042), (28, 295030), (35, 236024), (40, 206521), (56, 147515), (70, 118012), (140, 59006), (163, 50680), (181, 45640), (280, 29503), (326, 25340), (362, 22820), (652, 12670), (724, 11410), (815, 10136), (905, 9128), (1141, 7240), (1267, 6520), (1304, 6335), (1448, 5705), (1630, 5068), (1810, 4564), (2282, 3620), (2534, 3260)]