2840840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:150

約数の個数: 64

約数和(自身を含む): 6912000

約数和(自身を除く): 4071160

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 31, 40, 58, 62, 79, 116, 124, 145, 155, 158, 232, 248, 290, 310, 316, 395, 580, 620, 632, 790, 899, 1160, 1240, 1580, 1798, 2291, 2449, 3160, 3596, 4495, 4582, 4898, 7192, 8990, 9164, 9796, 11455, 12245, 17980, 18328, 19592, 22910, 24490, 35960, 45820, 48980, 71021, 91640, 97960, 142042, 284084, 355105, 568168, 710210, 1420420, 2840840]

約数ペア:

[(1, 2840840), (2, 1420420), (4, 710210), (5, 568168), (8, 355105), (10, 284084), (20, 142042), (29, 97960), (31, 91640), (40, 71021), (58, 48980), (62, 45820), (79, 35960), (116, 24490), (124, 22910), (145, 19592), (155, 18328), (158, 17980), (232, 12245), (248, 11455), (290, 9796), (310, 9164), (316, 8990), (395, 7192), (580, 4898), (620, 4582), (632, 4495), (790, 3596), (899, 3160), (1160, 2449), (1240, 2291), (1580, 1798)]