20992720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1973}}^1$

素因数の和:2012

約数の個数: 80

約数和(自身を含む): 58746240

約数和(自身を除く): 37753520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 1973, 2128, 2660, 3946, 5320, 7892, 9865, 10640, 13811, 15784, 19730, 27622, 31568, 37487, 39460, 55244, 69055, 74974, 78920, 110488, 138110, 149948, 157840, 187435, 220976, 262409, 276220, 299896, 374870, 524818, 552440, 599792, 749740, 1049636, 1104880, 1312045, 1499480, 2099272, 2624090, 2998960, 4198544, 5248180, 10496360, 20992720]

約数ペア:

[(1, 20992720), (2, 10496360), (4, 5248180), (5, 4198544), (7, 2998960), (8, 2624090), (10, 2099272), (14, 1499480), (16, 1312045), (19, 1104880), (20, 1049636), (28, 749740), (35, 599792), (38, 552440), (40, 524818), (56, 374870), (70, 299896), (76, 276220), (80, 262409), (95, 220976), (112, 187435), (133, 157840), (140, 149948), (152, 138110), (190, 110488), (266, 78920), (280, 74974), (304, 69055), (380, 55244), (532, 39460), (560, 37487), (665, 31568), (760, 27622), (1064, 19730), (1330, 15784), (1520, 13811), (1973, 10640), (2128, 9865), (2660, 7892), (3946, 5320)]