40353820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11939}}^1$

素因数の和:11974

約数の個数: 36

約数和(自身を含む): 91770840

約数和(自身を除く): 51417020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 11939, 23878, 47756, 59695, 119390, 155207, 238780, 310414, 620828, 776035, 1552070, 2017691, 3104140, 4035382, 8070764, 10088455, 20176910, 40353820]

約数ペア:

[(1, 40353820), (2, 20176910), (4, 10088455), (5, 8070764), (10, 4035382), (13, 3104140), (20, 2017691), (26, 1552070), (52, 776035), (65, 620828), (130, 310414), (169, 238780), (260, 155207), (338, 119390), (676, 59695), (845, 47756), (1690, 23878), (3380, 11939)]