20572020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{563}}^1$

素因数の和:614

約数の個数: 144

約数和(自身を含む): 73906560

約数和(自身を除く): 53334540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 58, 60, 63, 70, 84, 87, 90, 105, 116, 126, 140, 145, 174, 180, 203, 210, 252, 261, 290, 315, 348, 406, 420, 435, 522, 563, 580, 609, 630, 812, 870, 1015, 1044, 1126, 1218, 1260, 1305, 1689, 1740, 1827, 2030, 2252, 2436, 2610, 2815, 3045, 3378, 3654, 3941, 4060, 5067, 5220, 5630, 6090, 6756, 7308, 7882, 8445, 9135, 10134, 11260, 11823, 12180, 15764, 16327, 16890, 18270, 19705, 20268, 23646, 25335, 32654, 33780, 35469, 36540, 39410, 47292, 48981, 50670, 59115, 65308, 70938, 78820, 81635, 97962, 101340, 114289, 118230, 141876, 146943, 163270, 177345, 195924, 228578, 236460, 244905, 293886, 326540, 342867, 354690, 457156, 489810, 571445, 587772, 685734, 709380, 734715, 979620, 1028601, 1142890, 1371468, 1469430, 1714335, 2057202, 2285780, 2938860, 3428670, 4114404, 5143005, 6857340, 10286010, 20572020]

約数ペア:

[(1, 20572020), (2, 10286010), (3, 6857340), (4, 5143005), (5, 4114404), (6, 3428670), (7, 2938860), (9, 2285780), (10, 2057202), (12, 1714335), (14, 1469430), (15, 1371468), (18, 1142890), (20, 1028601), (21, 979620), (28, 734715), (29, 709380), (30, 685734), (35, 587772), (36, 571445), (42, 489810), (45, 457156), (58, 354690), (60, 342867), (63, 326540), (70, 293886), (84, 244905), (87, 236460), (90, 228578), (105, 195924), (116, 177345), (126, 163270), (140, 146943), (145, 141876), (174, 118230), (180, 114289), (203, 101340), (210, 97962), (252, 81635), (261, 78820), (290, 70938), (315, 65308), (348, 59115), (406, 50670), (420, 48981), (435, 47292), (522, 39410), (563, 36540), (580, 35469), (609, 33780), (630, 32654), (812, 25335), (870, 23646), (1015, 20268), (1044, 19705), (1126, 18270), (1218, 16890), (1260, 16327), (1305, 15764), (1689, 12180), (1740, 11823), (1827, 11260), (2030, 10134), (2252, 9135), (2436, 8445), (2610, 7882), (2815, 7308), (3045, 6756), (3378, 6090), (3654, 5630), (3941, 5220), (4060, 5067)]