277487780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{11971}}^1$

素因数の和:12060

約数の個数: 48

約数和(自身を含む): 623501760

約数和(自身を除く): 346013980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 1159, 1220, 2318, 4636, 5795, 11590, 11971, 23180, 23942, 47884, 59855, 119710, 227449, 239420, 454898, 730231, 909796, 1137245, 1460462, 2274490, 2920924, 3651155, 4548980, 7302310, 13874389, 14604620, 27748778, 55497556, 69371945, 138743890, 277487780]

約数ペア:

[(1, 277487780), (2, 138743890), (4, 69371945), (5, 55497556), (10, 27748778), (19, 14604620), (20, 13874389), (38, 7302310), (61, 4548980), (76, 3651155), (95, 2920924), (122, 2274490), (190, 1460462), (244, 1137245), (305, 909796), (380, 730231), (610, 454898), (1159, 239420), (1220, 227449), (2318, 119710), (4636, 59855), (5795, 47884), (11590, 23942), (11971, 23180)]