19872580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 52496640

約数和(自身を除く): 32624060

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 61, 65, 70, 91, 122, 130, 140, 179, 182, 244, 260, 305, 358, 364, 427, 455, 610, 716, 793, 854, 895, 910, 1220, 1253, 1586, 1708, 1790, 1820, 2135, 2327, 2506, 3172, 3580, 3965, 4270, 4654, 5012, 5551, 6265, 7930, 8540, 9308, 10919, 11102, 11635, 12530, 15860, 16289, 21838, 22204, 23270, 25060, 27755, 32578, 43676, 46540, 54595, 55510, 65156, 76433, 81445, 109190, 111020, 141947, 152866, 162890, 218380, 283894, 305732, 325780, 382165, 567788, 709735, 764330, 993629, 1419470, 1528660, 1987258, 2838940, 3974516, 4968145, 9936290, 19872580]

約数ペア:

[(1, 19872580), (2, 9936290), (4, 4968145), (5, 3974516), (7, 2838940), (10, 1987258), (13, 1528660), (14, 1419470), (20, 993629), (26, 764330), (28, 709735), (35, 567788), (52, 382165), (61, 325780), (65, 305732), (70, 283894), (91, 218380), (122, 162890), (130, 152866), (140, 141947), (179, 111020), (182, 109190), (244, 81445), (260, 76433), (305, 65156), (358, 55510), (364, 54595), (427, 46540), (455, 43676), (610, 32578), (716, 27755), (793, 25060), (854, 23270), (895, 22204), (910, 21838), (1220, 16289), (1253, 15860), (1586, 12530), (1708, 11635), (1790, 11102), (1820, 10919), (2135, 9308), (2327, 8540), (2506, 7930), (3172, 6265), (3580, 5551), (3965, 5012), (4270, 4654)]