21000895025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{523}}^1\times {\mathrm{967}}^1$

素因数の和:1662

約数の個数: 48

約数和(自身を含む): 28680926208

約数和(自身を除く): 7680031183

約数列:

[1, 5, 11, 25, 55, 151, 275, 523, 755, 967, 1661, 2615, 3775, 4835, 5753, 8305, 10637, 13075, 24175, 28765, 41525, 53185, 78973, 143825, 146017, 265925, 394865, 505741, 730085, 868703, 1606187, 1974325, 2528705, 3650425, 4343515, 5563151, 8030935, 12643525, 21717575, 27815755, 40154675, 76366891, 139078775, 381834455, 840035801, 1909172275, 4200179005, 21000895025]

約数ペア:

[(1, 21000895025), (5, 4200179005), (11, 1909172275), (25, 840035801), (55, 381834455), (151, 139078775), (275, 76366891), (523, 40154675), (755, 27815755), (967, 21717575), (1661, 12643525), (2615, 8030935), (3775, 5563151), (4835, 4343515), (5753, 3650425), (8305, 2528705), (10637, 1974325), (13075, 1606187), (24175, 868703), (28765, 730085), (41525, 505741), (53185, 394865), (78973, 265925), (143825, 146017)]