21524965

素因数分解:

$5^1\times 7^4\times {\mathrm{11}}^1\times {\mathrm{163}}^1$

素因数の和:207

約数の個数: 40

約数和(自身を含む): 33074208

約数和(自身を除く): 11549243

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 163, 245, 343, 385, 539, 815, 1141, 1715, 1793, 2401, 2695, 3773, 5705, 7987, 8965, 12005, 12551, 18865, 26411, 39935, 55909, 62755, 87857, 132055, 279545, 391363, 439285, 614999, 1956815, 3074995, 4304993, 21524965]

約数ペア:

[(1, 21524965), (5, 4304993), (7, 3074995), (11, 1956815), (35, 614999), (49, 439285), (55, 391363), (77, 279545), (163, 132055), (245, 87857), (343, 62755), (385, 55909), (539, 39935), (815, 26411), (1141, 18865), (1715, 12551), (1793, 12005), (2401, 8965), (2695, 7987), (3773, 5705)]