21853013

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 6887083

約数列:

[1, 7, 13, 23, 53, 91, 161, 197, 299, 371, 689, 1219, 1379, 2093, 2561, 4531, 4823, 8533, 10441, 15847, 17927, 31717, 58903, 73087, 110929, 135733, 240143, 412321, 950131, 1681001, 3121859, 21853013]

約数ペア:

[(1, 21853013), (7, 3121859), (13, 1681001), (23, 950131), (53, 412321), (91, 240143), (161, 135733), (197, 110929), (299, 73087), (371, 58903), (689, 31717), (1219, 17927), (1379, 15847), (2093, 10441), (2561, 8533), (4531, 4823)]