20212504

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 43999200

約数和(自身を除く): 23786696

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 53, 76, 104, 106, 152, 193, 212, 247, 386, 424, 494, 689, 772, 988, 1007, 1378, 1544, 1976, 2014, 2509, 2756, 3667, 4028, 5018, 5512, 7334, 8056, 10036, 10229, 13091, 14668, 20072, 20458, 26182, 29336, 40916, 47671, 52364, 81832, 95342, 104728, 132977, 190684, 194351, 265954, 381368, 388702, 531908, 777404, 1063816, 1554808, 2526563, 5053126, 10106252, 20212504]

約数ペア:

[(1, 20212504), (2, 10106252), (4, 5053126), (8, 2526563), (13, 1554808), (19, 1063816), (26, 777404), (38, 531908), (52, 388702), (53, 381368), (76, 265954), (104, 194351), (106, 190684), (152, 132977), (193, 104728), (212, 95342), (247, 81832), (386, 52364), (424, 47671), (494, 40916), (689, 29336), (772, 26182), (988, 20458), (1007, 20072), (1378, 14668), (1544, 13091), (1976, 10229), (2014, 10036), (2509, 8056), (2756, 7334), (3667, 5512), (4028, 5018)]