21088122.000000000

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{191}}^1\times {\mathrm{661}}^1$

素因数の和:873

約数の個数: 80

約数和(自身を含む): 369110016

約数和(自身を除く): 225941382

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 191, 378, 382, 567, 573, 661, 1134, 1146, 1322, 1337, 1719, 1983, 2674, 3438, 3966, 4011, 4627, 5157, 5949, 8022, 9254, 10314, 11898, 12033, 13881, 15471, 17847, 24066, 27762, 30942, 35694, 36099, 41643, 53541, 72198, 83286, 107082, 108297, 124929, 126251, 216594, 249858, 252502, 374787, 378753, 749574, 757506, 883757, 1136259, 1767514, 2272518, 2651271, 3408777, 5302542, 6817554, 7953813, 10226331, 15907626, 20452662, 23861439, 47722878, 71584317, 143168634]

約数ペア:

[(1, 143168634), (2, 71584317), (3, 47722878), (6, 23861439), (7, 20452662), (9, 15907626), (14, 10226331), (18, 7953813), (21, 6817554), (27, 5302542), (42, 3408777), (54, 2651271), (63, 2272518), (81, 1767514), (126, 1136259), (162, 883757), (189, 757506), (191, 749574), (378, 378753), (382, 374787), (567, 252502), (573, 249858), (661, 216594), (1134, 126251), (1146, 124929), (1322, 108297), (1337, 107082), (1719, 83286), (1983, 72198), (2674, 53541), (3438, 41643), (3966, 36099), (4011, 35694), (4627, 30942), (5157, 27762), (5949, 24066), (8022, 17847), (9254, 15471), (10314, 13881), (11898, 12033)]