21000966500

素因数分解:

$2^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{1826171}}^1$

素因数の和:1826213

約数の個数: 48

約数和(自身を含む): 47860315776

約数和(自身を除く): 26859349276

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 125, 230, 250, 460, 500, 575, 1150, 2300, 2875, 5750, 11500, 1826171, 3652342, 7304684, 9130855, 18261710, 36523420, 42001933, 45654275, 84003866, 91308550, 168007732, 182617100, 210009665, 228271375, 420019330, 456542750, 840038660, 913085500, 1050048325, 2100096650, 4200193300, 5250241625, 10500483250, 21000966500]

約数ペア:

[(1, 21000966500), (2, 10500483250), (4, 5250241625), (5, 4200193300), (10, 2100096650), (20, 1050048325), (23, 913085500), (25, 840038660), (46, 456542750), (50, 420019330), (92, 228271375), (100, 210009665), (115, 182617100), (125, 168007732), (230, 91308550), (250, 84003866), (460, 45654275), (500, 42001933), (575, 36523420), (1150, 18261710), (2300, 9130855), (2875, 7304684), (5750, 3652342), (11500, 1826171)]