249984440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1\times {\mathrm{331}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 573696000

約数和(自身を除く): 323711560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 239, 316, 331, 395, 478, 632, 662, 790, 956, 1195, 1324, 1580, 1655, 1912, 2390, 2648, 3160, 3310, 4780, 6620, 9560, 13240, 18881, 26149, 37762, 52298, 75524, 79109, 94405, 104596, 130745, 151048, 158218, 188810, 209192, 261490, 316436, 377620, 395545, 522980, 632872, 755240, 791090, 1045960, 1582180, 3164360, 6249611, 12499222, 24998444, 31248055, 49996888, 62496110, 124992220, 249984440]

約数ペア:

[(1, 249984440), (2, 124992220), (4, 62496110), (5, 49996888), (8, 31248055), (10, 24998444), (20, 12499222), (40, 6249611), (79, 3164360), (158, 1582180), (239, 1045960), (316, 791090), (331, 755240), (395, 632872), (478, 522980), (632, 395545), (662, 377620), (790, 316436), (956, 261490), (1195, 209192), (1324, 188810), (1580, 158218), (1655, 151048), (1912, 130745), (2390, 104596), (2648, 94405), (3160, 79109), (3310, 75524), (4780, 52298), (6620, 37762), (9560, 26149), (13240, 18881)]