201431980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{1523}}^1$

素因数の和:1938

約数の個数: 48

約数和(自身を含む): 449336160

約数和(自身を除く): 247904180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 389, 778, 1523, 1556, 1945, 3046, 3890, 6092, 6613, 7615, 7780, 13226, 15230, 25891, 26452, 30460, 33065, 51782, 66130, 103564, 129455, 132260, 258910, 517820, 592447, 1184894, 2369788, 2962235, 5924470, 10071599, 11848940, 20143198, 40286396, 50357995, 100715990, 201431980]

約数ペア:

[(1, 201431980), (2, 100715990), (4, 50357995), (5, 40286396), (10, 20143198), (17, 11848940), (20, 10071599), (34, 5924470), (68, 2962235), (85, 2369788), (170, 1184894), (340, 592447), (389, 517820), (778, 258910), (1523, 132260), (1556, 129455), (1945, 103564), (3046, 66130), (3890, 51782), (6092, 33065), (6613, 30460), (7615, 26452), (7780, 25891), (13226, 15230)]