388580980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1\times {\mathrm{739}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 832446720

約数和(自身を除く): 443865740

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 431, 610, 739, 862, 1220, 1478, 1724, 2155, 2956, 3695, 4310, 7390, 8620, 14780, 26291, 45079, 52582, 90158, 105164, 131455, 180316, 225395, 262910, 318509, 450790, 525820, 637018, 901580, 1274036, 1592545, 3185090, 6370180, 19429049, 38858098, 77716196, 97145245, 194290490, 388580980]

約数ペア:

[(1, 388580980), (2, 194290490), (4, 97145245), (5, 77716196), (10, 38858098), (20, 19429049), (61, 6370180), (122, 3185090), (244, 1592545), (305, 1274036), (431, 901580), (610, 637018), (739, 525820), (862, 450790), (1220, 318509), (1478, 262910), (1724, 225395), (2155, 180316), (2956, 131455), (3695, 105164), (4310, 90158), (7390, 52582), (8620, 45079), (14780, 26291)]