20394395

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 29445120

約数和(自身を除く): 9050725

約数列:

[1, 5, 7, 29, 35, 71, 145, 203, 283, 355, 497, 1015, 1415, 1981, 2059, 2485, 8207, 9905, 10295, 14413, 20093, 41035, 57449, 72065, 100465, 140651, 287245, 582697, 703255, 2913485, 4078879, 20394395]

約数ペア:

[(1, 20394395), (5, 4078879), (7, 2913485), (29, 703255), (35, 582697), (71, 287245), (145, 140651), (203, 100465), (283, 72065), (355, 57449), (497, 41035), (1015, 20093), (1415, 14413), (1981, 10295), (2059, 9905), (2485, 8207)]