20419140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{797}}^1$

素因数の和:877

約数の個数: 96

約数和(自身を含む): 66495744

約数和(自身を除く): 46076604

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 61, 70, 84, 105, 122, 140, 183, 210, 244, 305, 366, 420, 427, 610, 732, 797, 854, 915, 1220, 1281, 1594, 1708, 1830, 2135, 2391, 2562, 3188, 3660, 3985, 4270, 4782, 5124, 5579, 6405, 7970, 8540, 9564, 11158, 11955, 12810, 15940, 16737, 22316, 23910, 25620, 27895, 33474, 47820, 48617, 55790, 66948, 83685, 97234, 111580, 145851, 167370, 194468, 243085, 291702, 334740, 340319, 486170, 583404, 680638, 729255, 972340, 1020957, 1361276, 1458510, 1701595, 2041914, 2917020, 3403190, 4083828, 5104785, 6806380, 10209570, 20419140]

約数ペア:

[(1, 20419140), (2, 10209570), (3, 6806380), (4, 5104785), (5, 4083828), (6, 3403190), (7, 2917020), (10, 2041914), (12, 1701595), (14, 1458510), (15, 1361276), (20, 1020957), (21, 972340), (28, 729255), (30, 680638), (35, 583404), (42, 486170), (60, 340319), (61, 334740), (70, 291702), (84, 243085), (105, 194468), (122, 167370), (140, 145851), (183, 111580), (210, 97234), (244, 83685), (305, 66948), (366, 55790), (420, 48617), (427, 47820), (610, 33474), (732, 27895), (797, 25620), (854, 23910), (915, 22316), (1220, 16737), (1281, 15940), (1594, 12810), (1708, 11955), (1830, 11158), (2135, 9564), (2391, 8540), (2562, 7970), (3188, 6405), (3660, 5579), (3985, 5124), (4270, 4782)]