19803320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 27889480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 355, 367, 380, 568, 710, 734, 760, 1349, 1420, 1468, 1835, 2698, 2840, 2936, 3670, 5396, 6745, 6973, 7340, 10792, 13490, 13946, 14680, 26057, 26980, 27892, 34865, 52114, 53960, 55784, 69730, 104228, 130285, 139460, 208456, 260570, 278920, 495083, 521140, 990166, 1042280, 1980332, 2475415, 3960664, 4950830, 9901660, 19803320]

約数ペア:

[(1, 19803320), (2, 9901660), (4, 4950830), (5, 3960664), (8, 2475415), (10, 1980332), (19, 1042280), (20, 990166), (38, 521140), (40, 495083), (71, 278920), (76, 260570), (95, 208456), (142, 139460), (152, 130285), (190, 104228), (284, 69730), (355, 55784), (367, 53960), (380, 52114), (568, 34865), (710, 27892), (734, 26980), (760, 26057), (1349, 14680), (1420, 13946), (1468, 13490), (1835, 10792), (2698, 7340), (2840, 6973), (2936, 6745), (3670, 5396)]