90971825

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 136657920

約数和(自身を除く): 45686095

約数列:

[1, 5, 7, 25, 31, 35, 41, 155, 175, 205, 217, 287, 409, 775, 1025, 1085, 1271, 1435, 2045, 2863, 5425, 6355, 7175, 8897, 10225, 12679, 14315, 16769, 31775, 44485, 63395, 71575, 83845, 88753, 117383, 222425, 316975, 419225, 443765, 519839, 586915, 2218825, 2599195, 2934575, 3638873, 12995975, 18194365, 90971825]

約数ペア:

[(1, 90971825), (5, 18194365), (7, 12995975), (25, 3638873), (31, 2934575), (35, 2599195), (41, 2218825), (155, 586915), (175, 519839), (205, 443765), (217, 419225), (287, 316975), (409, 222425), (775, 117383), (1025, 88753), (1085, 83845), (1271, 71575), (1435, 63395), (2045, 44485), (2863, 31775), (5425, 16769), (6355, 14315), (7175, 12679), (8897, 10225)]