20180475

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4271}}^1$

素因数の和:4297

約数の個数: 48

約数和(自身を含む): 42378240

約数和(自身を除く): 22197765

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4271, 4725, 12813, 21355, 29897, 38439, 64065, 89691, 106775, 115317, 149485, 192195, 269073, 320325, 448455, 576585, 747425, 807219, 960975, 1345365, 2242275, 2882925, 4036095, 6726825, 20180475]

約数ペア:

[(1, 20180475), (3, 6726825), (5, 4036095), (7, 2882925), (9, 2242275), (15, 1345365), (21, 960975), (25, 807219), (27, 747425), (35, 576585), (45, 448455), (63, 320325), (75, 269073), (105, 192195), (135, 149485), (175, 115317), (189, 106775), (225, 89691), (315, 64065), (525, 38439), (675, 29897), (945, 21355), (1575, 12813), (4271, 4725)]