18850340

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{953}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 42311808

約数和(自身を除く): 23461468

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 953, 989, 1906, 1978, 3812, 3956, 4765, 4945, 9530, 9890, 19060, 19780, 21919, 40979, 43838, 81958, 87676, 109595, 163916, 204895, 219190, 409790, 438380, 819580, 942517, 1885034, 3770068, 4712585, 9425170, 18850340]

約数ペア:

[(1, 18850340), (2, 9425170), (4, 4712585), (5, 3770068), (10, 1885034), (20, 942517), (23, 819580), (43, 438380), (46, 409790), (86, 219190), (92, 204895), (115, 163916), (172, 109595), (215, 87676), (230, 81958), (430, 43838), (460, 40979), (860, 21919), (953, 19780), (989, 19060), (1906, 9890), (1978, 9530), (3812, 4945), (3956, 4765)]