21701360

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4447}}^1$

素因数の和:4521

約数の個数: 40

約数和(自身を含む): 51294336

約数和(自身を除く): 29592976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4447, 4880, 8894, 17788, 22235, 35576, 44470, 71152, 88940, 177880, 271267, 355760, 542534, 1085068, 1356335, 2170136, 2712670, 4340272, 5425340, 10850680, 21701360]

約数ペア:

[(1, 21701360), (2, 10850680), (4, 5425340), (5, 4340272), (8, 2712670), (10, 2170136), (16, 1356335), (20, 1085068), (40, 542534), (61, 355760), (80, 271267), (122, 177880), (244, 88940), (305, 71152), (488, 44470), (610, 35576), (976, 22235), (1220, 17788), (2440, 8894), (4447, 4880)]