21533815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 28957824

約数和(自身を除く): 7424009

約数列:

[1, 5, 17, 37, 41, 85, 167, 185, 205, 629, 697, 835, 1517, 2839, 3145, 3485, 6179, 6847, 7585, 14195, 25789, 30895, 34235, 105043, 116399, 128945, 253339, 525215, 581995, 1266695, 4306763, 21533815]

約数ペア:

[(1, 21533815), (5, 4306763), (17, 1266695), (37, 581995), (41, 525215), (85, 253339), (167, 128945), (185, 116399), (205, 105043), (629, 34235), (697, 30895), (835, 25789), (1517, 14195), (2839, 7585), (3145, 6847), (3485, 6179)]