21272153

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 5822887

約数列:

[1, 7, 19, 41, 47, 83, 133, 287, 329, 581, 779, 893, 1577, 1927, 3403, 3901, 5453, 6251, 11039, 13489, 23821, 27307, 36613, 64657, 74119, 159941, 256291, 452599, 518833, 1119587, 3038879, 21272153]

約数ペア:

[(1, 21272153), (7, 3038879), (19, 1119587), (41, 518833), (47, 452599), (83, 256291), (133, 159941), (287, 74119), (329, 64657), (581, 36613), (779, 27307), (893, 23821), (1577, 13489), (1927, 11039), (3403, 6251), (3901, 5453)]