21608475

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 41425920

約数和(自身を除く): 19817445

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 79, 105, 175, 237, 395, 521, 525, 553, 1185, 1563, 1659, 1975, 2605, 2765, 3647, 5925, 7815, 8295, 10941, 13025, 13825, 18235, 39075, 41159, 41475, 54705, 91175, 123477, 205795, 273525, 288113, 617385, 864339, 1028975, 1440565, 3086925, 4321695, 7202825, 21608475]

約数ペア:

[(1, 21608475), (3, 7202825), (5, 4321695), (7, 3086925), (15, 1440565), (21, 1028975), (25, 864339), (35, 617385), (75, 288113), (79, 273525), (105, 205795), (175, 123477), (237, 91175), (395, 54705), (521, 41475), (525, 41159), (553, 39075), (1185, 18235), (1563, 13825), (1659, 13025), (1975, 10941), (2605, 8295), (2765, 7815), (3647, 5925)]