21278544

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 120

約数和(自身を含む): 65308320

約数和(自身を除く): 44029776

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 49, 56, 83, 84, 98, 109, 112, 147, 166, 168, 196, 218, 249, 294, 327, 332, 336, 392, 436, 498, 581, 588, 654, 664, 763, 784, 872, 996, 1162, 1176, 1308, 1328, 1526, 1743, 1744, 1992, 2289, 2324, 2352, 2616, 3052, 3486, 3984, 4067, 4578, 4648, 5232, 5341, 6104, 6972, 8134, 9047, 9156, 9296, 10682, 12201, 12208, 13944, 16023, 16268, 18094, 18312, 21364, 24402, 27141, 27888, 32046, 32536, 36188, 36624, 42728, 48804, 54282, 63329, 64092, 65072, 72376, 85456, 97608, 108564, 126658, 128184, 144752, 189987, 195216, 217128, 253316, 256368, 379974, 434256, 443303, 506632, 759948, 886606, 1013264, 1329909, 1519896, 1773212, 2659818, 3039792, 3546424, 5319636, 7092848, 10639272, 21278544]

約数ペア:

[(1, 21278544), (2, 10639272), (3, 7092848), (4, 5319636), (6, 3546424), (7, 3039792), (8, 2659818), (12, 1773212), (14, 1519896), (16, 1329909), (21, 1013264), (24, 886606), (28, 759948), (42, 506632), (48, 443303), (49, 434256), (56, 379974), (83, 256368), (84, 253316), (98, 217128), (109, 195216), (112, 189987), (147, 144752), (166, 128184), (168, 126658), (196, 108564), (218, 97608), (249, 85456), (294, 72376), (327, 65072), (332, 64092), (336, 63329), (392, 54282), (436, 48804), (498, 42728), (581, 36624), (588, 36188), (654, 32536), (664, 32046), (763, 27888), (784, 27141), (872, 24402), (996, 21364), (1162, 18312), (1176, 18094), (1308, 16268), (1328, 16023), (1526, 13944), (1743, 12208), (1744, 12201), (1992, 10682), (2289, 9296), (2324, 9156), (2352, 9047), (2616, 8134), (3052, 6972), (3486, 6104), (3984, 5341), (4067, 5232), (4578, 4648)]