20198210

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{241}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 40118760

約数和(自身を除く): 19920550

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 145, 170, 241, 289, 290, 482, 493, 578, 986, 1205, 1445, 2410, 2465, 2890, 4097, 4930, 6989, 8194, 8381, 13978, 16762, 20485, 34945, 40970, 41905, 69649, 69890, 83810, 118813, 139298, 237626, 348245, 594065, 696490, 1188130, 2019821, 4039642, 10099105, 20198210]

約数ペア:

[(1, 20198210), (2, 10099105), (5, 4039642), (10, 2019821), (17, 1188130), (29, 696490), (34, 594065), (58, 348245), (85, 237626), (145, 139298), (170, 118813), (241, 83810), (289, 69890), (290, 69649), (482, 41905), (493, 40970), (578, 34945), (986, 20485), (1205, 16762), (1445, 13978), (2410, 8381), (2465, 8194), (2890, 6989), (4097, 4930)]