400862800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{607}}^1$

素因数の和:765

約数の個数: 120

約数和(自身を含む): 1047044096

約数和(自身を除く): 646181296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 127, 130, 200, 208, 254, 260, 325, 400, 508, 520, 607, 635, 650, 1016, 1040, 1214, 1270, 1300, 1651, 2032, 2428, 2540, 2600, 3035, 3175, 3302, 4856, 5080, 5200, 6070, 6350, 6604, 7891, 8255, 9712, 10160, 12140, 12700, 13208, 15175, 15782, 16510, 24280, 25400, 26416, 30350, 31564, 33020, 39455, 41275, 48560, 50800, 60700, 63128, 66040, 77089, 78910, 82550, 121400, 126256, 132080, 154178, 157820, 165100, 197275, 242800, 308356, 315640, 330200, 385445, 394550, 616712, 631280, 660400, 770890, 789100, 1002157, 1233424, 1541780, 1578200, 1927225, 2004314, 3083560, 3156400, 3854450, 4008628, 5010785, 6167120, 7708900, 8017256, 10021570, 15417800, 16034512, 20043140, 25053925, 30835600, 40086280, 50107850, 80172560, 100215700, 200431400, 400862800]

約数ペア:

[(1, 400862800), (2, 200431400), (4, 100215700), (5, 80172560), (8, 50107850), (10, 40086280), (13, 30835600), (16, 25053925), (20, 20043140), (25, 16034512), (26, 15417800), (40, 10021570), (50, 8017256), (52, 7708900), (65, 6167120), (80, 5010785), (100, 4008628), (104, 3854450), (127, 3156400), (130, 3083560), (200, 2004314), (208, 1927225), (254, 1578200), (260, 1541780), (325, 1233424), (400, 1002157), (508, 789100), (520, 770890), (607, 660400), (635, 631280), (650, 616712), (1016, 394550), (1040, 385445), (1214, 330200), (1270, 315640), (1300, 308356), (1651, 242800), (2032, 197275), (2428, 165100), (2540, 157820), (2600, 154178), (3035, 132080), (3175, 126256), (3302, 121400), (4856, 82550), (5080, 78910), (5200, 77089), (6070, 66040), (6350, 63128), (6604, 60700), (7891, 50800), (8255, 48560), (9712, 41275), (10160, 39455), (12140, 33020), (12700, 31564), (13208, 30350), (15175, 26416), (15782, 25400), (16510, 24280)]