19712035

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:603

約数の個数: 32

約数和(自身を含む): 28864512

約数和(自身を除く): 9152477

約数列:

[1, 5, 7, 23, 35, 47, 115, 161, 235, 329, 521, 805, 1081, 1645, 2605, 3647, 5405, 7567, 11983, 18235, 24487, 37835, 59915, 83881, 122435, 171409, 419405, 563201, 857045, 2816005, 3942407, 19712035]

約数ペア:

[(1, 19712035), (5, 3942407), (7, 2816005), (23, 857045), (35, 563201), (47, 419405), (115, 171409), (161, 122435), (235, 83881), (329, 59915), (521, 37835), (805, 24487), (1081, 18235), (1645, 11983), (2605, 7567), (3647, 5405)]