20612844

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{521}}^1$

素因数の和:695

約数の個数: 72

約数和(自身を含む): 60042528

約数和(自身を除く): 39429684

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 157, 252, 314, 471, 521, 628, 942, 1042, 1099, 1413, 1563, 1884, 2084, 2198, 2826, 3126, 3297, 3647, 4396, 4689, 5652, 6252, 6594, 7294, 9378, 9891, 10941, 13188, 14588, 18756, 19782, 21882, 32823, 39564, 43764, 65646, 81797, 131292, 163594, 245391, 327188, 490782, 572579, 736173, 981564, 1145158, 1472346, 1717737, 2290316, 2944692, 3435474, 5153211, 6870948, 10306422, 20612844]

約数ペア:

[(1, 20612844), (2, 10306422), (3, 6870948), (4, 5153211), (6, 3435474), (7, 2944692), (9, 2290316), (12, 1717737), (14, 1472346), (18, 1145158), (21, 981564), (28, 736173), (36, 572579), (42, 490782), (63, 327188), (84, 245391), (126, 163594), (157, 131292), (252, 81797), (314, 65646), (471, 43764), (521, 39564), (628, 32823), (942, 21882), (1042, 19782), (1099, 18756), (1413, 14588), (1563, 13188), (1884, 10941), (2084, 9891), (2198, 9378), (2826, 7294), (3126, 6594), (3297, 6252), (3647, 5652), (4396, 4689)]