640390536

素因数分解:

$2^3\times 3^5\times {\mathrm{329419}}^1$

素因数の和:329440

約数の個数: 48

約数和(自身を含む): 1798633200

約数和(自身を除く): 1158242664

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 243, 324, 486, 648, 972, 1944, 329419, 658838, 988257, 1317676, 1976514, 2635352, 2964771, 3953028, 5929542, 7906056, 8894313, 11859084, 17788626, 23718168, 26682939, 35577252, 53365878, 71154504, 80048817, 106731756, 160097634, 213463512, 320195268, 640390536]

約数ペア:

[(1, 640390536), (2, 320195268), (3, 213463512), (4, 160097634), (6, 106731756), (8, 80048817), (9, 71154504), (12, 53365878), (18, 35577252), (24, 26682939), (27, 23718168), (36, 17788626), (54, 11859084), (72, 8894313), (81, 7906056), (108, 5929542), (162, 3953028), (216, 2964771), (243, 2635352), (324, 1976514), (486, 1317676), (648, 988257), (972, 658838), (1944, 329419)]