680965960

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1\times {\mathrm{839}}^1$

素因数の和:1150

約数の個数: 64

約数和(自身を含む): 1556755200

約数和(自身を除く): 875789240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 197, 206, 394, 412, 515, 788, 824, 839, 985, 1030, 1576, 1678, 1970, 2060, 3356, 3940, 4120, 4195, 6712, 7880, 8390, 16780, 20291, 33560, 40582, 81164, 86417, 101455, 162328, 165283, 172834, 202910, 330566, 345668, 405820, 432085, 661132, 691336, 811640, 826415, 864170, 1322264, 1652830, 1728340, 3305660, 3456680, 6611320, 17024149, 34048298, 68096596, 85120745, 136193192, 170241490, 340482980, 680965960]

約数ペア:

[(1, 680965960), (2, 340482980), (4, 170241490), (5, 136193192), (8, 85120745), (10, 68096596), (20, 34048298), (40, 17024149), (103, 6611320), (197, 3456680), (206, 3305660), (394, 1728340), (412, 1652830), (515, 1322264), (788, 864170), (824, 826415), (839, 811640), (985, 691336), (1030, 661132), (1576, 432085), (1678, 405820), (1970, 345668), (2060, 330566), (3356, 202910), (3940, 172834), (4120, 165283), (4195, 162328), (6712, 101455), (7880, 86417), (8390, 81164), (16780, 40582), (20291, 33560)]