20861388

素因数分解:

$2^2\times 3^4\times {\mathrm{31}}^2\times {\mathrm{67}}^1$

素因数の和:145

約数の個数: 90

約数和(自身を含む): 57192828

約数和(自身を除く): 36331440

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 31, 36, 54, 62, 67, 81, 93, 108, 124, 134, 162, 186, 201, 268, 279, 324, 372, 402, 558, 603, 804, 837, 961, 1116, 1206, 1674, 1809, 1922, 2077, 2412, 2511, 2883, 3348, 3618, 3844, 4154, 5022, 5427, 5766, 6231, 7236, 8308, 8649, 10044, 10854, 11532, 12462, 17298, 18693, 21708, 24924, 25947, 34596, 37386, 51894, 56079, 64387, 74772, 77841, 103788, 112158, 128774, 155682, 168237, 193161, 224316, 257548, 311364, 336474, 386322, 579483, 672948, 772644, 1158966, 1738449, 2317932, 3476898, 5215347, 6953796, 10430694, 20861388]

約数ペア:

[(1, 20861388), (2, 10430694), (3, 6953796), (4, 5215347), (6, 3476898), (9, 2317932), (12, 1738449), (18, 1158966), (27, 772644), (31, 672948), (36, 579483), (54, 386322), (62, 336474), (67, 311364), (81, 257548), (93, 224316), (108, 193161), (124, 168237), (134, 155682), (162, 128774), (186, 112158), (201, 103788), (268, 77841), (279, 74772), (324, 64387), (372, 56079), (402, 51894), (558, 37386), (603, 34596), (804, 25947), (837, 24924), (961, 21708), (1116, 18693), (1206, 17298), (1674, 12462), (1809, 11532), (1922, 10854), (2077, 10044), (2412, 8649), (2511, 8308), (2883, 7236), (3348, 6231), (3618, 5766), (3844, 5427), (4154, 5022)]