21000866820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18421813}}^1$

素因数の和:18421844

約数の個数: 48

約数和(自身を含む): 61897295040

約数和(自身を除く): 40896428220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18421813, 36843626, 55265439, 73687252, 92109065, 110530878, 184218130, 221061756, 276327195, 350014447, 368436260, 552654390, 700028894, 1050043341, 1105308780, 1400057788, 1750072235, 2100086682, 3500144470, 4200173364, 5250216705, 7000288940, 10500433410, 21000866820]

約数ペア:

[(1, 21000866820), (2, 10500433410), (3, 7000288940), (4, 5250216705), (5, 4200173364), (6, 3500144470), (10, 2100086682), (12, 1750072235), (15, 1400057788), (19, 1105308780), (20, 1050043341), (30, 700028894), (38, 552654390), (57, 368436260), (60, 350014447), (76, 276327195), (95, 221061756), (114, 184218130), (190, 110530878), (228, 92109065), (285, 73687252), (380, 55265439), (570, 36843626), (1140, 18421813)]