640107908

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{32257}}^1$

素因数の和:32324

約数の個数: 36

約数和(自身を含む): 1261352316

約数和(自身を除く): 621244408

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 121, 164, 242, 451, 484, 902, 1804, 4961, 9922, 19844, 32257, 64514, 129028, 354827, 709654, 1322537, 1419308, 2645074, 3903097, 5290148, 7806194, 14547907, 15612388, 29095814, 58191628, 160026977, 320053954, 640107908]

約数ペア:

[(1, 640107908), (2, 320053954), (4, 160026977), (11, 58191628), (22, 29095814), (41, 15612388), (44, 14547907), (82, 7806194), (121, 5290148), (164, 3903097), (242, 2645074), (451, 1419308), (484, 1322537), (902, 709654), (1804, 354827), (4961, 129028), (9922, 64514), (19844, 32257)]