20543775

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 39283200

約数和(自身を除く): 18739425

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 109, 175, 327, 359, 525, 545, 763, 1077, 1635, 1795, 2289, 2513, 2725, 3815, 5385, 7539, 8175, 8975, 11445, 12565, 19075, 26925, 37695, 39131, 57225, 62825, 117393, 188475, 195655, 273917, 586965, 821751, 978275, 1369585, 2934825, 4108755, 6847925, 20543775]

約数ペア:

[(1, 20543775), (3, 6847925), (5, 4108755), (7, 2934825), (15, 1369585), (21, 978275), (25, 821751), (35, 586965), (75, 273917), (105, 195655), (109, 188475), (175, 117393), (327, 62825), (359, 57225), (525, 39131), (545, 37695), (763, 26925), (1077, 19075), (1635, 12565), (1795, 11445), (2289, 8975), (2513, 8175), (2725, 7539), (3815, 5385)]