21990830

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 19066450

約数列:

[1, 2, 5, 10, 47, 71, 94, 142, 235, 355, 470, 659, 710, 1318, 3295, 3337, 6590, 6674, 16685, 30973, 33370, 46789, 61946, 93578, 154865, 233945, 309730, 467890, 2199083, 4398166, 10995415, 21990830]

約数ペア:

[(1, 21990830), (2, 10995415), (5, 4398166), (10, 2199083), (47, 467890), (71, 309730), (94, 233945), (142, 154865), (235, 93578), (355, 61946), (470, 46789), (659, 33370), (710, 30973), (1318, 16685), (3295, 6674), (3337, 6590)]