20421200340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{7573}}^1$

素因数の和:7870

約数の個数: 144

約数和(自身を含む): 63122806656

約数和(自身を除く): 42701606316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 211, 213, 284, 355, 422, 426, 633, 639, 710, 844, 852, 1055, 1065, 1266, 1278, 1420, 1899, 2110, 2130, 2532, 2556, 3165, 3195, 3798, 4220, 4260, 6330, 6390, 7573, 7596, 9495, 12660, 12780, 14981, 15146, 18990, 22719, 29962, 30292, 37865, 37980, 44943, 45438, 59924, 68157, 74905, 75730, 89886, 90876, 113595, 134829, 136314, 149810, 151460, 179772, 224715, 227190, 269658, 272628, 299620, 340785, 449430, 454380, 537683, 539316, 674145, 681570, 898860, 1075366, 1348290, 1363140, 1597903, 1613049, 2150732, 2688415, 2696580, 3195806, 3226098, 4793709, 4839147, 5376830, 6391612, 6452196, 7989515, 8065245, 9587418, 9678294, 10753660, 14381127, 15979030, 16130490, 19174836, 19356588, 23968545, 24195735, 28762254, 31958060, 32260980, 47937090, 48391470, 57524508, 71905635, 95874180, 96782940, 113451113, 143811270, 226902226, 287622540, 340353339, 453804452, 567255565, 680706678, 1021060017, 1134511130, 1361413356, 1701766695, 2042120034, 2269022260, 3403533390, 4084240068, 5105300085, 6807066780, 10210600170, 20421200340]

約数ペア:

[(1, 20421200340), (2, 10210600170), (3, 6807066780), (4, 5105300085), (5, 4084240068), (6, 3403533390), (9, 2269022260), (10, 2042120034), (12, 1701766695), (15, 1361413356), (18, 1134511130), (20, 1021060017), (30, 680706678), (36, 567255565), (45, 453804452), (60, 340353339), (71, 287622540), (90, 226902226), (142, 143811270), (180, 113451113), (211, 96782940), (213, 95874180), (284, 71905635), (355, 57524508), (422, 48391470), (426, 47937090), (633, 32260980), (639, 31958060), (710, 28762254), (844, 24195735), (852, 23968545), (1055, 19356588), (1065, 19174836), (1266, 16130490), (1278, 15979030), (1420, 14381127), (1899, 10753660), (2110, 9678294), (2130, 9587418), (2532, 8065245), (2556, 7989515), (3165, 6452196), (3195, 6391612), (3798, 5376830), (4220, 4839147), (4260, 4793709), (6330, 3226098), (6390, 3195806), (7573, 2696580), (7596, 2688415), (9495, 2150732), (12660, 1613049), (12780, 1597903), (14981, 1363140), (15146, 1348290), (18990, 1075366), (22719, 898860), (29962, 681570), (30292, 674145), (37865, 539316), (37980, 537683), (44943, 454380), (45438, 449430), (59924, 340785), (68157, 299620), (74905, 272628), (75730, 269658), (89886, 227190), (90876, 224715), (113595, 179772), (134829, 151460), (136314, 149810)]