20464140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:679

約数の個数: 96

約数和(自身を含む): 62496000

約数和(自身を除く): 42031860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 29, 30, 38, 57, 58, 60, 76, 87, 95, 114, 116, 145, 174, 190, 228, 285, 290, 348, 380, 435, 551, 570, 580, 619, 870, 1102, 1140, 1238, 1653, 1740, 1857, 2204, 2476, 2755, 3095, 3306, 3714, 5510, 6190, 6612, 7428, 8265, 9285, 11020, 11761, 12380, 16530, 17951, 18570, 23522, 33060, 35283, 35902, 37140, 47044, 53853, 58805, 70566, 71804, 89755, 107706, 117610, 141132, 176415, 179510, 215412, 235220, 269265, 341069, 352830, 359020, 538530, 682138, 705660, 1023207, 1077060, 1364276, 1705345, 2046414, 3410690, 4092828, 5116035, 6821380, 10232070, 20464140]

約数ペア:

[(1, 20464140), (2, 10232070), (3, 6821380), (4, 5116035), (5, 4092828), (6, 3410690), (10, 2046414), (12, 1705345), (15, 1364276), (19, 1077060), (20, 1023207), (29, 705660), (30, 682138), (38, 538530), (57, 359020), (58, 352830), (60, 341069), (76, 269265), (87, 235220), (95, 215412), (114, 179510), (116, 176415), (145, 141132), (174, 117610), (190, 107706), (228, 89755), (285, 71804), (290, 70566), (348, 58805), (380, 53853), (435, 47044), (551, 37140), (570, 35902), (580, 35283), (619, 33060), (870, 23522), (1102, 18570), (1140, 17951), (1238, 16530), (1653, 12380), (1740, 11761), (1857, 11020), (2204, 9285), (2476, 8265), (2755, 7428), (3095, 6612), (3306, 6190), (3714, 5510)]