20647620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2341}}^1$

素因数の和:2370

約数の個数: 108

約数和(自身を含む): 72887724

約数和(自身を除く): 52240104

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2341, 2940, 4410, 4682, 7023, 8820, 9364, 11705, 14046, 16387, 21069, 23410, 28092, 32774, 35115, 42138, 46820, 49161, 65548, 70230, 81935, 84276, 98322, 105345, 114709, 140460, 147483, 163870, 196644, 210690, 229418, 245805, 294966, 327740, 344127, 421380, 458836, 491610, 573545, 589932, 688254, 737415, 983220, 1032381, 1147090, 1376508, 1474830, 1720635, 2064762, 2294180, 2949660, 3441270, 4129524, 5161905, 6882540, 10323810, 20647620]

約数ペア:

[(1, 20647620), (2, 10323810), (3, 6882540), (4, 5161905), (5, 4129524), (6, 3441270), (7, 2949660), (9, 2294180), (10, 2064762), (12, 1720635), (14, 1474830), (15, 1376508), (18, 1147090), (20, 1032381), (21, 983220), (28, 737415), (30, 688254), (35, 589932), (36, 573545), (42, 491610), (45, 458836), (49, 421380), (60, 344127), (63, 327740), (70, 294966), (84, 245805), (90, 229418), (98, 210690), (105, 196644), (126, 163870), (140, 147483), (147, 140460), (180, 114709), (196, 105345), (210, 98322), (245, 84276), (252, 81935), (294, 70230), (315, 65548), (420, 49161), (441, 46820), (490, 42138), (588, 35115), (630, 32774), (735, 28092), (882, 23410), (980, 21069), (1260, 16387), (1470, 14046), (1764, 11705), (2205, 9364), (2341, 8820), (2940, 7023), (4410, 4682)]