19879740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{617}}^1$

素因数の和:811

約数の個数: 72

約数和(自身を含む): 60737040

約数和(自身を除く): 40857300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 179, 180, 358, 537, 617, 716, 895, 1074, 1234, 1611, 1790, 1851, 2148, 2468, 2685, 3085, 3222, 3580, 3702, 5370, 5553, 6170, 6444, 7404, 8055, 9255, 10740, 11106, 12340, 16110, 18510, 22212, 27765, 32220, 37020, 55530, 110443, 111060, 220886, 331329, 441772, 552215, 662658, 993987, 1104430, 1325316, 1656645, 1987974, 2208860, 3313290, 3975948, 4969935, 6626580, 9939870, 19879740]

約数ペア:

[(1, 19879740), (2, 9939870), (3, 6626580), (4, 4969935), (5, 3975948), (6, 3313290), (9, 2208860), (10, 1987974), (12, 1656645), (15, 1325316), (18, 1104430), (20, 993987), (30, 662658), (36, 552215), (45, 441772), (60, 331329), (90, 220886), (179, 111060), (180, 110443), (358, 55530), (537, 37020), (617, 32220), (716, 27765), (895, 22212), (1074, 18510), (1234, 16110), (1611, 12340), (1790, 11106), (1851, 10740), (2148, 9255), (2468, 8055), (2685, 7404), (3085, 6444), (3222, 6170), (3580, 5553), (3702, 5370)]