20966800

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:137

約数の個数: 120

約数和(自身を含む): 54800064

約数和(自身を除く): 33833264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 43, 46, 50, 53, 80, 86, 92, 100, 106, 115, 172, 184, 200, 212, 215, 230, 265, 344, 368, 400, 424, 430, 460, 530, 575, 688, 848, 860, 920, 989, 1060, 1075, 1150, 1219, 1325, 1720, 1840, 1978, 2120, 2150, 2279, 2300, 2438, 2650, 3440, 3956, 4240, 4300, 4558, 4600, 4876, 4945, 5300, 6095, 7912, 8600, 9116, 9200, 9752, 9890, 10600, 11395, 12190, 15824, 17200, 18232, 19504, 19780, 21200, 22790, 24380, 24725, 30475, 36464, 39560, 45580, 48760, 49450, 52417, 56975, 60950, 79120, 91160, 97520, 98900, 104834, 113950, 121900, 182320, 197800, 209668, 227900, 243800, 262085, 395600, 419336, 455800, 487600, 524170, 838672, 911600, 1048340, 1310425, 2096680, 2620850, 4193360, 5241700, 10483400, 20966800]

約数ペア:

[(1, 20966800), (2, 10483400), (4, 5241700), (5, 4193360), (8, 2620850), (10, 2096680), (16, 1310425), (20, 1048340), (23, 911600), (25, 838672), (40, 524170), (43, 487600), (46, 455800), (50, 419336), (53, 395600), (80, 262085), (86, 243800), (92, 227900), (100, 209668), (106, 197800), (115, 182320), (172, 121900), (184, 113950), (200, 104834), (212, 98900), (215, 97520), (230, 91160), (265, 79120), (344, 60950), (368, 56975), (400, 52417), (424, 49450), (430, 48760), (460, 45580), (530, 39560), (575, 36464), (688, 30475), (848, 24725), (860, 24380), (920, 22790), (989, 21200), (1060, 19780), (1075, 19504), (1150, 18232), (1219, 17200), (1325, 15824), (1720, 12190), (1840, 11395), (1978, 10600), (2120, 9890), (2150, 9752), (2279, 9200), (2300, 9116), (2438, 8600), (2650, 7912), (3440, 6095), (3956, 5300), (4240, 4945), (4300, 4876), (4558, 4600)]