18611408

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:435

約数の個数: 40

約数和(自身を含む): 37616640

約数和(自身を除く): 19005232

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 157, 239, 248, 314, 478, 496, 628, 956, 1256, 1912, 2512, 3824, 4867, 7409, 9734, 14818, 19468, 29636, 37523, 38936, 59272, 75046, 77872, 118544, 150092, 300184, 600368, 1163213, 2326426, 4652852, 9305704, 18611408]

約数ペア:

[(1, 18611408), (2, 9305704), (4, 4652852), (8, 2326426), (16, 1163213), (31, 600368), (62, 300184), (124, 150092), (157, 118544), (239, 77872), (248, 75046), (314, 59272), (478, 38936), (496, 37523), (628, 29636), (956, 19468), (1256, 14818), (1912, 9734), (2512, 7409), (3824, 4867)]