8641960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 20865600

約数和(自身を除く): 12223640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 83, 95, 137, 152, 166, 190, 274, 332, 380, 415, 548, 664, 685, 760, 830, 1096, 1370, 1577, 1660, 2603, 2740, 3154, 3320, 5206, 5480, 6308, 7885, 10412, 11371, 12616, 13015, 15770, 20824, 22742, 26030, 31540, 45484, 52060, 56855, 63080, 90968, 104120, 113710, 216049, 227420, 432098, 454840, 864196, 1080245, 1728392, 2160490, 4320980, 8641960]

約数ペア:

[(1, 8641960), (2, 4320980), (4, 2160490), (5, 1728392), (8, 1080245), (10, 864196), (19, 454840), (20, 432098), (38, 227420), (40, 216049), (76, 113710), (83, 104120), (95, 90968), (137, 63080), (152, 56855), (166, 52060), (190, 45484), (274, 31540), (332, 26030), (380, 22742), (415, 20824), (548, 15770), (664, 13015), (685, 12616), (760, 11371), (830, 10412), (1096, 7885), (1370, 6308), (1577, 5480), (1660, 5206), (2603, 3320), (2740, 3154)]