21283528

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 47589120

約数和(自身を除く): 26305592

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 71, 101, 106, 142, 202, 212, 284, 371, 404, 424, 497, 568, 707, 742, 808, 994, 1414, 1484, 1988, 2828, 2968, 3763, 3976, 5353, 5656, 7171, 7526, 10706, 14342, 15052, 21412, 26341, 28684, 30104, 37471, 42824, 50197, 52682, 57368, 74942, 100394, 105364, 149884, 200788, 210728, 299768, 380063, 401576, 760126, 1520252, 2660441, 3040504, 5320882, 10641764, 21283528]

約数ペア:

[(1, 21283528), (2, 10641764), (4, 5320882), (7, 3040504), (8, 2660441), (14, 1520252), (28, 760126), (53, 401576), (56, 380063), (71, 299768), (101, 210728), (106, 200788), (142, 149884), (202, 105364), (212, 100394), (284, 74942), (371, 57368), (404, 52682), (424, 50197), (497, 42824), (568, 37471), (707, 30104), (742, 28684), (808, 26341), (994, 21412), (1414, 15052), (1484, 14342), (1988, 10706), (2828, 7526), (2968, 7171), (3763, 5656), (3976, 5353)]