47121980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 102194400

約数和(自身を除く): 55072420

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 157, 172, 215, 314, 349, 430, 628, 698, 785, 860, 1396, 1570, 1745, 3140, 3490, 6751, 6980, 13502, 15007, 27004, 30014, 33755, 54793, 60028, 67510, 75035, 109586, 135020, 150070, 219172, 273965, 300140, 547930, 1095860, 2356099, 4712198, 9424396, 11780495, 23560990, 47121980]

約数ペア:

[(1, 47121980), (2, 23560990), (4, 11780495), (5, 9424396), (10, 4712198), (20, 2356099), (43, 1095860), (86, 547930), (157, 300140), (172, 273965), (215, 219172), (314, 150070), (349, 135020), (430, 109586), (628, 75035), (698, 67510), (785, 60028), (860, 54793), (1396, 33755), (1570, 30014), (1745, 27004), (3140, 15007), (3490, 13502), (6751, 6980)]