20552805

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:280

約数の個数: 96

約数和(自身を含む): 45964800

約数和(自身を除く): 25411995

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 49, 63, 65, 91, 105, 117, 135, 147, 189, 195, 239, 245, 273, 315, 351, 441, 455, 585, 637, 717, 735, 819, 945, 1195, 1323, 1365, 1673, 1755, 1911, 2151, 2205, 2457, 3107, 3185, 3585, 4095, 5019, 5733, 6453, 6615, 8365, 9321, 9555, 10755, 11711, 12285, 15057, 15535, 17199, 21749, 25095, 27963, 28665, 32265, 35133, 45171, 46605, 58555, 65247, 75285, 83889, 85995, 105399, 108745, 139815, 152243, 175665, 195741, 225855, 316197, 326235, 419445, 456729, 526995, 587223, 761215, 978705, 1370187, 1580985, 2283645, 2936115, 4110561, 6850935, 20552805]

約数ペア:

[(1, 20552805), (3, 6850935), (5, 4110561), (7, 2936115), (9, 2283645), (13, 1580985), (15, 1370187), (21, 978705), (27, 761215), (35, 587223), (39, 526995), (45, 456729), (49, 419445), (63, 326235), (65, 316197), (91, 225855), (105, 195741), (117, 175665), (135, 152243), (147, 139815), (189, 108745), (195, 105399), (239, 85995), (245, 83889), (273, 75285), (315, 65247), (351, 58555), (441, 46605), (455, 45171), (585, 35133), (637, 32265), (717, 28665), (735, 27963), (819, 25095), (945, 21749), (1195, 17199), (1323, 15535), (1365, 15057), (1673, 12285), (1755, 11711), (1911, 10755), (2151, 9555), (2205, 9321), (2457, 8365), (3107, 6615), (3185, 6453), (3585, 5733), (4095, 5019)]