21243030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1811}}^1$

素因数の和:1861

約数の個数: 64

約数和(自身を含む): 56360448

約数和(自身を除く): 35117418

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 30, 34, 46, 51, 69, 85, 102, 115, 138, 170, 230, 255, 345, 391, 510, 690, 782, 1173, 1811, 1955, 2346, 3622, 3910, 5433, 5865, 9055, 10866, 11730, 18110, 27165, 30787, 41653, 54330, 61574, 83306, 92361, 124959, 153935, 184722, 208265, 249918, 307870, 416530, 461805, 624795, 708101, 923610, 1249590, 1416202, 2124303, 3540505, 4248606, 7081010, 10621515, 21243030]

約数ペア:

[(1, 21243030), (2, 10621515), (3, 7081010), (5, 4248606), (6, 3540505), (10, 2124303), (15, 1416202), (17, 1249590), (23, 923610), (30, 708101), (34, 624795), (46, 461805), (51, 416530), (69, 307870), (85, 249918), (102, 208265), (115, 184722), (138, 153935), (170, 124959), (230, 92361), (255, 83306), (345, 61574), (391, 54330), (510, 41653), (690, 30787), (782, 27165), (1173, 18110), (1811, 11730), (1955, 10866), (2346, 9055), (3622, 5865), (3910, 5433)]