19418980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4783}}^1$

素因数の和:4828

約数の個数: 48

約数和(自身を含む): 48222720

約数和(自身を除く): 28803740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4783, 9566, 19132, 23915, 33481, 47830, 66962, 95660, 133924, 138707, 167405, 277414, 334810, 554828, 669620, 693535, 970949, 1387070, 1941898, 2774140, 3883796, 4854745, 9709490, 19418980]

約数ペア:

[(1, 19418980), (2, 9709490), (4, 4854745), (5, 3883796), (7, 2774140), (10, 1941898), (14, 1387070), (20, 970949), (28, 693535), (29, 669620), (35, 554828), (58, 334810), (70, 277414), (116, 167405), (140, 138707), (145, 133924), (203, 95660), (290, 66962), (406, 47830), (580, 33481), (812, 23915), (1015, 19132), (2030, 9566), (4060, 4783)]