20456820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:942

約数の個数: 96

約数和(自身を含む): 65197440

約数和(自身を除く): 44740620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 86, 90, 108, 129, 135, 172, 180, 215, 258, 270, 387, 430, 516, 540, 645, 774, 860, 881, 1161, 1290, 1548, 1762, 1935, 2322, 2580, 2643, 3524, 3870, 4405, 4644, 5286, 5805, 7740, 7929, 8810, 10572, 11610, 13215, 15858, 17620, 23220, 23787, 26430, 31716, 37883, 39645, 47574, 52860, 75766, 79290, 95148, 113649, 118935, 151532, 158580, 189415, 227298, 237870, 340947, 378830, 454596, 475740, 568245, 681894, 757660, 1022841, 1136490, 1363788, 1704735, 2045682, 2272980, 3409470, 4091364, 5114205, 6818940, 10228410, 20456820]

約数ペア:

[(1, 20456820), (2, 10228410), (3, 6818940), (4, 5114205), (5, 4091364), (6, 3409470), (9, 2272980), (10, 2045682), (12, 1704735), (15, 1363788), (18, 1136490), (20, 1022841), (27, 757660), (30, 681894), (36, 568245), (43, 475740), (45, 454596), (54, 378830), (60, 340947), (86, 237870), (90, 227298), (108, 189415), (129, 158580), (135, 151532), (172, 118935), (180, 113649), (215, 95148), (258, 79290), (270, 75766), (387, 52860), (430, 47574), (516, 39645), (540, 37883), (645, 31716), (774, 26430), (860, 23787), (881, 23220), (1161, 17620), (1290, 15858), (1548, 13215), (1762, 11610), (1935, 10572), (2322, 8810), (2580, 7929), (2643, 7740), (3524, 5805), (3870, 5286), (4405, 4644)]