21103810

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3313}}^1$

素因数の和:3347

約数の個数: 48

約数和(自身を含む): 47602296

約数和(自身を除く): 26498486

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3313, 6370, 6626, 16565, 23191, 33130, 43069, 46382, 86138, 115955, 162337, 215345, 231910, 301483, 324674, 430690, 602966, 811685, 1507415, 1623370, 2110381, 3014830, 4220762, 10551905, 21103810]

約数ペア:

[(1, 21103810), (2, 10551905), (5, 4220762), (7, 3014830), (10, 2110381), (13, 1623370), (14, 1507415), (26, 811685), (35, 602966), (49, 430690), (65, 324674), (70, 301483), (91, 231910), (98, 215345), (130, 162337), (182, 115955), (245, 86138), (455, 46382), (490, 43069), (637, 33130), (910, 23191), (1274, 16565), (3185, 6626), (3313, 6370)]