68131780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{349}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 147470400

約数和(自身を除く): 79338620

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 227, 349, 430, 454, 698, 860, 908, 1135, 1396, 1745, 2270, 3490, 4540, 6980, 9761, 15007, 19522, 30014, 39044, 48805, 60028, 75035, 79223, 97610, 150070, 158446, 195220, 300140, 316892, 396115, 792230, 1584460, 3406589, 6813178, 13626356, 17032945, 34065890, 68131780]

約数ペア:

[(1, 68131780), (2, 34065890), (4, 17032945), (5, 13626356), (10, 6813178), (20, 3406589), (43, 1584460), (86, 792230), (172, 396115), (215, 316892), (227, 300140), (349, 195220), (430, 158446), (454, 150070), (698, 97610), (860, 79223), (908, 75035), (1135, 60028), (1396, 48805), (1745, 39044), (2270, 30014), (3490, 19522), (4540, 15007), (6980, 9761)]