181856140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:547

約数の個数: 72

約数和(自身を含む): 412195392

約数和(自身を除く): 230339252

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 73, 85, 146, 170, 289, 292, 340, 365, 431, 578, 730, 862, 1156, 1241, 1445, 1460, 1724, 2155, 2482, 2890, 4310, 4964, 5780, 6205, 7327, 8620, 12410, 14654, 21097, 24820, 29308, 31463, 36635, 42194, 62926, 73270, 84388, 105485, 124559, 125852, 146540, 157315, 210970, 249118, 314630, 421940, 498236, 534871, 622795, 629260, 1069742, 1245590, 2139484, 2491180, 2674355, 5348710, 9092807, 10697420, 18185614, 36371228, 45464035, 90928070, 181856140]

約数ペア:

[(1, 181856140), (2, 90928070), (4, 45464035), (5, 36371228), (10, 18185614), (17, 10697420), (20, 9092807), (34, 5348710), (68, 2674355), (73, 2491180), (85, 2139484), (146, 1245590), (170, 1069742), (289, 629260), (292, 622795), (340, 534871), (365, 498236), (431, 421940), (578, 314630), (730, 249118), (862, 210970), (1156, 157315), (1241, 146540), (1445, 125852), (1460, 124559), (1724, 105485), (2155, 84388), (2482, 73270), (2890, 62926), (4310, 42194), (4964, 36635), (5780, 31463), (6205, 29308), (7327, 24820), (8620, 21097), (12410, 14654)]