21000786768

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{11218369}}^1$

素因数の和:11218396

約数の個数: 60

約数和(自身を含む): 63294043540

約数和(自身を除く): 42293256772

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 468, 624, 936, 1872, 11218369, 22436738, 33655107, 44873476, 67310214, 89746952, 100965321, 134620428, 145838797, 179493904, 201930642, 269240856, 291677594, 403861284, 437516391, 538481712, 583355188, 807722568, 875032782, 1166710376, 1312549173, 1615445136, 1750065564, 2333420752, 2625098346, 3500131128, 5250196692, 7000262256, 10500393384, 21000786768]

約数ペア:

[(1, 21000786768), (2, 10500393384), (3, 7000262256), (4, 5250196692), (6, 3500131128), (8, 2625098346), (9, 2333420752), (12, 1750065564), (13, 1615445136), (16, 1312549173), (18, 1166710376), (24, 875032782), (26, 807722568), (36, 583355188), (39, 538481712), (48, 437516391), (52, 403861284), (72, 291677594), (78, 269240856), (104, 201930642), (117, 179493904), (144, 145838797), (156, 134620428), (208, 100965321), (234, 89746952), (312, 67310214), (468, 44873476), (624, 33655107), (936, 22436738), (1872, 11218369)]