19865970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{719}}^1$

素因数の和:1039

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 32025870

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 307, 614, 719, 921, 1438, 1535, 1842, 2157, 2763, 3070, 3595, 4314, 4605, 5526, 6471, 7190, 9210, 10785, 12942, 13815, 21570, 27630, 32355, 64710, 220733, 441466, 662199, 1103665, 1324398, 1986597, 2207330, 3310995, 3973194, 6621990, 9932985, 19865970]

約数ペア:

[(1, 19865970), (2, 9932985), (3, 6621990), (5, 3973194), (6, 3310995), (9, 2207330), (10, 1986597), (15, 1324398), (18, 1103665), (30, 662199), (45, 441466), (90, 220733), (307, 64710), (614, 32355), (719, 27630), (921, 21570), (1438, 13815), (1535, 12942), (1842, 10785), (2157, 9210), (2763, 7190), (3070, 6471), (3595, 5526), (4314, 4605)]