19387940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6779}}^1$

素因数の和:6812

約数の個数: 48

約数和(自身を含む): 47839680

約数和(自身を除く): 28451740

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 6779, 13558, 27116, 33895, 67790, 74569, 88127, 135580, 149138, 176254, 298276, 352508, 372845, 440635, 745690, 881270, 969397, 1491380, 1762540, 1938794, 3877588, 4846985, 9693970, 19387940]

約数ペア:

[(1, 19387940), (2, 9693970), (4, 4846985), (5, 3877588), (10, 1938794), (11, 1762540), (13, 1491380), (20, 969397), (22, 881270), (26, 745690), (44, 440635), (52, 372845), (55, 352508), (65, 298276), (110, 176254), (130, 149138), (143, 135580), (220, 88127), (260, 74569), (286, 67790), (572, 33895), (715, 27116), (1430, 13558), (2860, 6779)]