20851425

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{1471}}^1$

素因数の和:1500

約数の個数: 60

約数和(自身を含む): 44171776

約数和(自身を除く): 23320351

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 315, 405, 525, 567, 675, 945, 1471, 1575, 2025, 2835, 4413, 4725, 7355, 10297, 13239, 14175, 22065, 30891, 36775, 39717, 51485, 66195, 92673, 110325, 119151, 154455, 198585, 257425, 278019, 330975, 463365, 595755, 772275, 834057, 992925, 1390095, 2316825, 2978775, 4170285, 6950475, 20851425]

約数ペア:

[(1, 20851425), (3, 6950475), (5, 4170285), (7, 2978775), (9, 2316825), (15, 1390095), (21, 992925), (25, 834057), (27, 772275), (35, 595755), (45, 463365), (63, 330975), (75, 278019), (81, 257425), (105, 198585), (135, 154455), (175, 119151), (189, 110325), (225, 92673), (315, 66195), (405, 51485), (525, 39717), (567, 36775), (675, 30891), (945, 22065), (1471, 14175), (1575, 13239), (2025, 10297), (2835, 7355), (4413, 4725)]