21871330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2027}}^1$

素因数の和:2130

約数の個数: 32

約数和(自身を含む): 42928704

約数和(自身を除く): 21057374

約数列:

[1, 2, 5, 10, 13, 26, 65, 83, 130, 166, 415, 830, 1079, 2027, 2158, 4054, 5395, 10135, 10790, 20270, 26351, 52702, 131755, 168241, 263510, 336482, 841205, 1682410, 2187133, 4374266, 10935665, 21871330]

約数ペア:

[(1, 21871330), (2, 10935665), (5, 4374266), (10, 2187133), (13, 1682410), (26, 841205), (65, 336482), (83, 263510), (130, 168241), (166, 131755), (415, 52702), (830, 26351), (1079, 20270), (2027, 10790), (2158, 10135), (4054, 5395)]