20288580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2$

素因数の和:118

約数の個数: 144

約数和(自身を含む): 66185280

約数和(自身を除く): 45896700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 37, 38, 39, 52, 57, 60, 65, 74, 76, 78, 95, 111, 114, 130, 148, 156, 185, 190, 195, 222, 228, 247, 260, 285, 370, 380, 390, 444, 481, 494, 555, 570, 703, 740, 741, 780, 962, 988, 1110, 1140, 1235, 1369, 1406, 1443, 1482, 1924, 2109, 2220, 2405, 2470, 2738, 2812, 2886, 2964, 3515, 3705, 4107, 4218, 4810, 4940, 5476, 5772, 6845, 7030, 7215, 7410, 8214, 8436, 9139, 9620, 10545, 13690, 14060, 14430, 14820, 16428, 17797, 18278, 20535, 21090, 26011, 27380, 27417, 28860, 35594, 36556, 41070, 42180, 45695, 52022, 53391, 54834, 71188, 78033, 82140, 88985, 91390, 104044, 106782, 109668, 130055, 137085, 156066, 177970, 182780, 213564, 260110, 266955, 274170, 312132, 338143, 355940, 390165, 520220, 533910, 548340, 676286, 780330, 1014429, 1067820, 1352572, 1560660, 1690715, 2028858, 3381430, 4057716, 5072145, 6762860, 10144290, 20288580]

約数ペア:

[(1, 20288580), (2, 10144290), (3, 6762860), (4, 5072145), (5, 4057716), (6, 3381430), (10, 2028858), (12, 1690715), (13, 1560660), (15, 1352572), (19, 1067820), (20, 1014429), (26, 780330), (30, 676286), (37, 548340), (38, 533910), (39, 520220), (52, 390165), (57, 355940), (60, 338143), (65, 312132), (74, 274170), (76, 266955), (78, 260110), (95, 213564), (111, 182780), (114, 177970), (130, 156066), (148, 137085), (156, 130055), (185, 109668), (190, 106782), (195, 104044), (222, 91390), (228, 88985), (247, 82140), (260, 78033), (285, 71188), (370, 54834), (380, 53391), (390, 52022), (444, 45695), (481, 42180), (494, 41070), (555, 36556), (570, 35594), (703, 28860), (740, 27417), (741, 27380), (780, 26011), (962, 21090), (988, 20535), (1110, 18278), (1140, 17797), (1235, 16428), (1369, 14820), (1406, 14430), (1443, 14060), (1482, 13690), (1924, 10545), (2109, 9620), (2220, 9139), (2405, 8436), (2470, 8214), (2738, 7410), (2812, 7215), (2886, 7030), (2964, 6845), (3515, 5772), (3705, 5476), (4107, 4940), (4218, 4810)]