87141790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 167883840

約数和(自身を除く): 80742050

約数列:

[1, 2, 5, 10, 19, 38, 95, 101, 190, 202, 239, 361, 478, 505, 722, 1010, 1195, 1805, 1919, 2390, 3610, 3838, 4541, 9082, 9595, 19190, 22705, 24139, 36461, 45410, 48278, 72922, 86279, 120695, 172558, 182305, 241390, 364610, 431395, 458641, 862790, 917282, 2293205, 4586410, 8714179, 17428358, 43570895, 87141790]

約数ペア:

[(1, 87141790), (2, 43570895), (5, 17428358), (10, 8714179), (19, 4586410), (38, 2293205), (95, 917282), (101, 862790), (190, 458641), (202, 431395), (239, 364610), (361, 241390), (478, 182305), (505, 172558), (722, 120695), (1010, 86279), (1195, 72922), (1805, 48278), (1919, 45410), (2390, 36461), (3610, 24139), (3838, 22705), (4541, 19190), (9082, 9595)]