40990816

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:407

約数の個数: 48

約数和(自身を含む): 83613600

約数和(自身を除く): 42622784

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 157, 164, 199, 314, 328, 398, 628, 656, 796, 1256, 1312, 1592, 2512, 3184, 5024, 6368, 6437, 8159, 12874, 16318, 25748, 31243, 32636, 51496, 62486, 65272, 102992, 124972, 130544, 205984, 249944, 261088, 499888, 999776, 1280963, 2561926, 5123852, 10247704, 20495408, 40990816]

約数ペア:

[(1, 40990816), (2, 20495408), (4, 10247704), (8, 5123852), (16, 2561926), (32, 1280963), (41, 999776), (82, 499888), (157, 261088), (164, 249944), (199, 205984), (314, 130544), (328, 124972), (398, 102992), (628, 65272), (656, 62486), (796, 51496), (1256, 32636), (1312, 31243), (1592, 25748), (2512, 16318), (3184, 12874), (5024, 8159), (6368, 6437)]