81972090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1993}}^1$

素因数の和:2463

約数の個数: 48

約数和(自身を含む): 213700968

約数和(自身を除く): 131728878

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 457, 914, 1371, 1993, 2285, 2742, 3986, 4113, 4570, 5979, 6855, 8226, 9965, 11958, 13710, 17937, 19930, 20565, 29895, 35874, 41130, 59790, 89685, 179370, 910801, 1821602, 2732403, 4554005, 5464806, 8197209, 9108010, 13662015, 16394418, 27324030, 40986045, 81972090]

約数ペア:

[(1, 81972090), (2, 40986045), (3, 27324030), (5, 16394418), (6, 13662015), (9, 9108010), (10, 8197209), (15, 5464806), (18, 4554005), (30, 2732403), (45, 1821602), (90, 910801), (457, 179370), (914, 89685), (1371, 59790), (1993, 41130), (2285, 35874), (2742, 29895), (3986, 20565), (4113, 19930), (4570, 17937), (5979, 13710), (6855, 11958), (8226, 9965)]