400549640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{3847}}^1$

素因数の和:4014

約数の個数: 64

約数和(自身を含む): 955843200

約数和(自身を除く): 555293560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 137, 152, 190, 274, 380, 548, 685, 760, 1096, 1370, 2603, 2740, 3847, 5206, 5480, 7694, 10412, 13015, 15388, 19235, 20824, 26030, 30776, 38470, 52060, 73093, 76940, 104120, 146186, 153880, 292372, 365465, 527039, 584744, 730930, 1054078, 1461860, 2108156, 2635195, 2923720, 4216312, 5270390, 10013741, 10540780, 20027482, 21081560, 40054964, 50068705, 80109928, 100137410, 200274820, 400549640]

約数ペア:

[(1, 400549640), (2, 200274820), (4, 100137410), (5, 80109928), (8, 50068705), (10, 40054964), (19, 21081560), (20, 20027482), (38, 10540780), (40, 10013741), (76, 5270390), (95, 4216312), (137, 2923720), (152, 2635195), (190, 2108156), (274, 1461860), (380, 1054078), (548, 730930), (685, 584744), (760, 527039), (1096, 365465), (1370, 292372), (2603, 153880), (2740, 146186), (3847, 104120), (5206, 76940), (5480, 73093), (7694, 52060), (10412, 38470), (13015, 30776), (15388, 26030), (19235, 20824)]