21187236

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:469

約数の個数: 96

約数和(自身を含む): 61592832

約数和(自身を除く): 40405596

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 37, 42, 51, 68, 74, 84, 102, 111, 119, 148, 204, 222, 238, 259, 357, 401, 444, 476, 518, 629, 714, 777, 802, 1036, 1203, 1258, 1428, 1554, 1604, 1887, 2406, 2516, 2807, 3108, 3774, 4403, 4812, 5614, 6817, 7548, 8421, 8806, 11228, 13209, 13634, 14837, 16842, 17612, 20451, 26418, 27268, 29674, 33684, 40902, 44511, 47719, 52836, 59348, 81804, 89022, 95438, 103859, 143157, 178044, 190876, 207718, 252229, 286314, 311577, 415436, 504458, 572628, 623154, 756687, 1008916, 1246308, 1513374, 1765603, 3026748, 3531206, 5296809, 7062412, 10593618, 21187236]

約数ペア:

[(1, 21187236), (2, 10593618), (3, 7062412), (4, 5296809), (6, 3531206), (7, 3026748), (12, 1765603), (14, 1513374), (17, 1246308), (21, 1008916), (28, 756687), (34, 623154), (37, 572628), (42, 504458), (51, 415436), (68, 311577), (74, 286314), (84, 252229), (102, 207718), (111, 190876), (119, 178044), (148, 143157), (204, 103859), (222, 95438), (238, 89022), (259, 81804), (357, 59348), (401, 52836), (444, 47719), (476, 44511), (518, 40902), (629, 33684), (714, 29674), (777, 27268), (802, 26418), (1036, 20451), (1203, 17612), (1258, 16842), (1428, 14837), (1554, 13634), (1604, 13209), (1887, 11228), (2406, 8806), (2516, 8421), (2807, 7548), (3108, 6817), (3774, 5614), (4403, 4812)]