21637480

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{811}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 52617600

約数和(自身を除く): 30980120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 29, 40, 46, 58, 92, 115, 116, 145, 184, 230, 232, 290, 460, 580, 667, 811, 920, 1160, 1334, 1622, 2668, 3244, 3335, 4055, 5336, 6488, 6670, 8110, 13340, 16220, 18653, 23519, 26680, 32440, 37306, 47038, 74612, 93265, 94076, 117595, 149224, 186530, 188152, 235190, 373060, 470380, 540937, 746120, 940760, 1081874, 2163748, 2704685, 4327496, 5409370, 10818740, 21637480]

約数ペア:

[(1, 21637480), (2, 10818740), (4, 5409370), (5, 4327496), (8, 2704685), (10, 2163748), (20, 1081874), (23, 940760), (29, 746120), (40, 540937), (46, 470380), (58, 373060), (92, 235190), (115, 188152), (116, 186530), (145, 149224), (184, 117595), (230, 94076), (232, 93265), (290, 74612), (460, 47038), (580, 37306), (667, 32440), (811, 26680), (920, 23519), (1160, 18653), (1334, 16220), (1622, 13340), (2668, 8110), (3244, 6670), (3335, 6488), (4055, 5336)]