890290480

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{971}}^1$

素因数の和:1214

約数の個数: 80

約数和(自身を含む): 2113820064

約数和(自身を除く): 1223529584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 157, 292, 314, 365, 584, 628, 730, 785, 971, 1168, 1256, 1460, 1570, 1942, 2512, 2920, 3140, 3884, 4855, 5840, 6280, 7768, 9710, 11461, 12560, 15536, 19420, 22922, 38840, 45844, 57305, 70883, 77680, 91688, 114610, 141766, 152447, 183376, 229220, 283532, 304894, 354415, 458440, 567064, 609788, 708830, 762235, 916880, 1134128, 1219576, 1417660, 1524470, 2439152, 2835320, 3048940, 5670640, 6097880, 11128631, 12195760, 22257262, 44514524, 55643155, 89029048, 111286310, 178058096, 222572620, 445145240, 890290480]

約数ペア:

[(1, 890290480), (2, 445145240), (4, 222572620), (5, 178058096), (8, 111286310), (10, 89029048), (16, 55643155), (20, 44514524), (40, 22257262), (73, 12195760), (80, 11128631), (146, 6097880), (157, 5670640), (292, 3048940), (314, 2835320), (365, 2439152), (584, 1524470), (628, 1417660), (730, 1219576), (785, 1134128), (971, 916880), (1168, 762235), (1256, 708830), (1460, 609788), (1570, 567064), (1942, 458440), (2512, 354415), (2920, 304894), (3140, 283532), (3884, 229220), (4855, 183376), (5840, 152447), (6280, 141766), (7768, 114610), (9710, 91688), (11461, 77680), (12560, 70883), (15536, 57305), (19420, 45844), (22922, 38840)]