19847240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{971}}^1$

素因数の和:1062

約数の個数: 64

約数和(自身を含む): 51788160

約数和(自身を除く): 31940920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 971, 1022, 1460, 1942, 2044, 2555, 2920, 3884, 4088, 4855, 5110, 6797, 7768, 9710, 10220, 13594, 19420, 20440, 27188, 33985, 38840, 54376, 67970, 70883, 135940, 141766, 271880, 283532, 354415, 496181, 567064, 708830, 992362, 1417660, 1984724, 2480905, 2835320, 3969448, 4961810, 9923620, 19847240]

約数ペア:

[(1, 19847240), (2, 9923620), (4, 4961810), (5, 3969448), (7, 2835320), (8, 2480905), (10, 1984724), (14, 1417660), (20, 992362), (28, 708830), (35, 567064), (40, 496181), (56, 354415), (70, 283532), (73, 271880), (140, 141766), (146, 135940), (280, 70883), (292, 67970), (365, 54376), (511, 38840), (584, 33985), (730, 27188), (971, 20440), (1022, 19420), (1460, 13594), (1942, 10220), (2044, 9710), (2555, 7768), (2920, 6797), (3884, 5110), (4088, 4855)]