21245868

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:356

約数の個数: 96

約数和(自身を含む): 63705600

約数和(自身を除く): 42459732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 157, 179, 189, 252, 314, 358, 378, 471, 537, 628, 716, 756, 942, 1074, 1099, 1253, 1413, 1611, 1884, 2148, 2198, 2506, 2826, 3222, 3297, 3759, 4239, 4396, 4833, 5012, 5652, 6444, 6594, 7518, 8478, 9666, 9891, 11277, 13188, 15036, 16956, 19332, 19782, 22554, 28103, 29673, 33831, 39564, 45108, 56206, 59346, 67662, 84309, 112412, 118692, 135324, 168618, 196721, 252927, 337236, 393442, 505854, 590163, 758781, 786884, 1011708, 1180326, 1517562, 1770489, 2360652, 3035124, 3540978, 5311467, 7081956, 10622934, 21245868]

約数ペア:

[(1, 21245868), (2, 10622934), (3, 7081956), (4, 5311467), (6, 3540978), (7, 3035124), (9, 2360652), (12, 1770489), (14, 1517562), (18, 1180326), (21, 1011708), (27, 786884), (28, 758781), (36, 590163), (42, 505854), (54, 393442), (63, 337236), (84, 252927), (108, 196721), (126, 168618), (157, 135324), (179, 118692), (189, 112412), (252, 84309), (314, 67662), (358, 59346), (378, 56206), (471, 45108), (537, 39564), (628, 33831), (716, 29673), (756, 28103), (942, 22554), (1074, 19782), (1099, 19332), (1253, 16956), (1413, 15036), (1611, 13188), (1884, 11277), (2148, 9891), (2198, 9666), (2506, 8478), (2826, 7518), (3222, 6594), (3297, 6444), (3759, 5652), (4239, 5012), (4396, 4833)]