8438780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 21067200

約数和(自身を除く): 12628420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 109, 140, 158, 196, 218, 245, 316, 395, 436, 490, 545, 553, 763, 790, 980, 1090, 1106, 1526, 1580, 2180, 2212, 2765, 3052, 3815, 3871, 5341, 5530, 7630, 7742, 8611, 10682, 11060, 15260, 15484, 17222, 19355, 21364, 26705, 34444, 38710, 43055, 53410, 60277, 77420, 86110, 106820, 120554, 172220, 241108, 301385, 421939, 602770, 843878, 1205540, 1687756, 2109695, 4219390, 8438780]

約数ペア:

[(1, 8438780), (2, 4219390), (4, 2109695), (5, 1687756), (7, 1205540), (10, 843878), (14, 602770), (20, 421939), (28, 301385), (35, 241108), (49, 172220), (70, 120554), (79, 106820), (98, 86110), (109, 77420), (140, 60277), (158, 53410), (196, 43055), (218, 38710), (245, 34444), (316, 26705), (395, 21364), (436, 19355), (490, 17222), (545, 15484), (553, 15260), (763, 11060), (790, 10682), (980, 8611), (1090, 7742), (1106, 7630), (1526, 5530), (1580, 5341), (2180, 3871), (2212, 3815), (2765, 3052)]