639213042

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1979}}^1$

素因数の和:2139

約数の個数: 64

約数和(自身を含む): 1425029760

約数和(自身を除く): 785816718

約数列:

[1, 2, 3, 6, 13, 26, 39, 41, 78, 82, 101, 123, 202, 246, 303, 533, 606, 1066, 1313, 1599, 1979, 2626, 3198, 3939, 3958, 4141, 5937, 7878, 8282, 11874, 12423, 24846, 25727, 51454, 53833, 77181, 81139, 107666, 154362, 161499, 162278, 199879, 243417, 322998, 399758, 486834, 599637, 1054807, 1199274, 2109614, 2598427, 3164421, 5196854, 6328842, 7795281, 8195039, 15590562, 16390078, 24585117, 49170234, 106535507, 213071014, 319606521, 639213042]

約数ペア:

[(1, 639213042), (2, 319606521), (3, 213071014), (6, 106535507), (13, 49170234), (26, 24585117), (39, 16390078), (41, 15590562), (78, 8195039), (82, 7795281), (101, 6328842), (123, 5196854), (202, 3164421), (246, 2598427), (303, 2109614), (533, 1199274), (606, 1054807), (1066, 599637), (1313, 486834), (1599, 399758), (1979, 322998), (2626, 243417), (3198, 199879), (3939, 162278), (3958, 161499), (4141, 154362), (5937, 107666), (7878, 81139), (8282, 77181), (11874, 53833), (12423, 51454), (24846, 25727)]