28520620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 62431488

約数和(自身を除く): 33910868

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 293, 310, 314, 586, 620, 628, 785, 1172, 1465, 1570, 2930, 3140, 4867, 5860, 9083, 9734, 18166, 19468, 24335, 36332, 45415, 46001, 48670, 90830, 92002, 97340, 181660, 184004, 230005, 460010, 920020, 1426031, 2852062, 5704124, 7130155, 14260310, 28520620]

約数ペア:

[(1, 28520620), (2, 14260310), (4, 7130155), (5, 5704124), (10, 2852062), (20, 1426031), (31, 920020), (62, 460010), (124, 230005), (155, 184004), (157, 181660), (293, 97340), (310, 92002), (314, 90830), (586, 48670), (620, 46001), (628, 45415), (785, 36332), (1172, 24335), (1465, 19468), (1570, 18166), (2930, 9734), (3140, 9083), (4867, 5860)]