21508620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{617}}^1$

素因数の和:719

約数の個数: 96

約数和(自身を含む): 69769728

約数和(自身を除く): 48261108

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 83, 84, 105, 140, 166, 210, 249, 332, 415, 420, 498, 581, 617, 830, 996, 1162, 1234, 1245, 1660, 1743, 1851, 2324, 2468, 2490, 2905, 3085, 3486, 3702, 4319, 4980, 5810, 6170, 6972, 7404, 8638, 8715, 9255, 11620, 12340, 12957, 17276, 17430, 18510, 21595, 25914, 34860, 37020, 43190, 51211, 51828, 64785, 86380, 102422, 129570, 153633, 204844, 256055, 259140, 307266, 358477, 512110, 614532, 716954, 768165, 1024220, 1075431, 1433908, 1536330, 1792385, 2150862, 3072660, 3584770, 4301724, 5377155, 7169540, 10754310, 21508620]

約数ペア:

[(1, 21508620), (2, 10754310), (3, 7169540), (4, 5377155), (5, 4301724), (6, 3584770), (7, 3072660), (10, 2150862), (12, 1792385), (14, 1536330), (15, 1433908), (20, 1075431), (21, 1024220), (28, 768165), (30, 716954), (35, 614532), (42, 512110), (60, 358477), (70, 307266), (83, 259140), (84, 256055), (105, 204844), (140, 153633), (166, 129570), (210, 102422), (249, 86380), (332, 64785), (415, 51828), (420, 51211), (498, 43190), (581, 37020), (617, 34860), (830, 25914), (996, 21595), (1162, 18510), (1234, 17430), (1245, 17276), (1660, 12957), (1743, 12340), (1851, 11620), (2324, 9255), (2468, 8715), (2490, 8638), (2905, 7404), (3085, 6972), (3486, 6170), (3702, 5810), (4319, 4980)]