21092890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1783}}^1$

素因数の和:1823

約数の個数: 48

約数和(自身を含む): 47011968

約数和(自身を除く): 25919078

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 169, 182, 338, 455, 845, 910, 1183, 1690, 1783, 2366, 3566, 5915, 8915, 11830, 12481, 17830, 23179, 24962, 46358, 62405, 115895, 124810, 162253, 231790, 301327, 324506, 602654, 811265, 1506635, 1622530, 2109289, 3013270, 4218578, 10546445, 21092890]

約数ペア:

[(1, 21092890), (2, 10546445), (5, 4218578), (7, 3013270), (10, 2109289), (13, 1622530), (14, 1506635), (26, 811265), (35, 602654), (65, 324506), (70, 301327), (91, 231790), (130, 162253), (169, 124810), (182, 115895), (338, 62405), (455, 46358), (845, 24962), (910, 23179), (1183, 17830), (1690, 12481), (1783, 11830), (2366, 8915), (3566, 5915)]