18668475

素因数分解:

$3^5\times 5^2\times 7^1\times {\mathrm{439}}^1$

素因数の和:471

約数の個数: 72

約数和(自身を含む): 39719680

約数和(自身を除く): 21051205

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 243, 315, 405, 439, 525, 567, 675, 945, 1215, 1317, 1575, 1701, 2025, 2195, 2835, 3073, 3951, 4725, 6075, 6585, 8505, 9219, 10975, 11853, 14175, 15365, 19755, 27657, 32925, 35559, 42525, 46095, 59265, 76825, 82971, 98775, 106677, 138285, 177795, 230475, 248913, 296325, 414855, 533385, 691425, 746739, 888975, 1244565, 2074275, 2666925, 3733695, 6222825, 18668475]

約数ペア:

[(1, 18668475), (3, 6222825), (5, 3733695), (7, 2666925), (9, 2074275), (15, 1244565), (21, 888975), (25, 746739), (27, 691425), (35, 533385), (45, 414855), (63, 296325), (75, 248913), (81, 230475), (105, 177795), (135, 138285), (175, 106677), (189, 98775), (225, 82971), (243, 76825), (315, 59265), (405, 46095), (439, 42525), (525, 35559), (567, 32925), (675, 27657), (945, 19755), (1215, 15365), (1317, 14175), (1575, 11853), (1701, 10975), (2025, 9219), (2195, 8505), (2835, 6585), (3073, 6075), (3951, 4725)]