640813752

素因数分解:

$2^3\times 3^2\times {\mathrm{211}}^1\times {\mathrm{42181}}^1$

素因数の和:42404

約数の個数: 48

約数和(自身を含む): 1743803880

約数和(自身を除く): 1102990128

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 211, 422, 633, 844, 1266, 1688, 1899, 2532, 3798, 5064, 7596, 15192, 42181, 84362, 126543, 168724, 253086, 337448, 379629, 506172, 759258, 1012344, 1518516, 3037032, 8900191, 17800382, 26700573, 35600764, 53401146, 71201528, 80101719, 106802292, 160203438, 213604584, 320406876, 640813752]

約数ペア:

[(1, 640813752), (2, 320406876), (3, 213604584), (4, 160203438), (6, 106802292), (8, 80101719), (9, 71201528), (12, 53401146), (18, 35600764), (24, 26700573), (36, 17800382), (72, 8900191), (211, 3037032), (422, 1518516), (633, 1012344), (844, 759258), (1266, 506172), (1688, 379629), (1899, 337448), (2532, 253086), (3798, 168724), (5064, 126543), (7596, 84362), (15192, 42181)]