19783940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4733}}^1$

素因数の和:4772

約数の個数: 48

約数和(自身を含む): 47718720

約数和(自身を除く): 27934780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4733, 9466, 18932, 23665, 47330, 52063, 89927, 94660, 104126, 179854, 208252, 260315, 359708, 449635, 520630, 899270, 989197, 1041260, 1798540, 1978394, 3956788, 4945985, 9891970, 19783940]

約数ペア:

[(1, 19783940), (2, 9891970), (4, 4945985), (5, 3956788), (10, 1978394), (11, 1798540), (19, 1041260), (20, 989197), (22, 899270), (38, 520630), (44, 449635), (55, 359708), (76, 260315), (95, 208252), (110, 179854), (190, 104126), (209, 94660), (220, 89927), (380, 52063), (418, 47330), (836, 23665), (1045, 18932), (2090, 9466), (4180, 4733)]