21208902

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1301}}^1$

素因数の和:1349

約数の個数: 64

約数和(自身を含む): 52496640

約数和(自身を除く): 31287738

約数列:

[1, 2, 3, 6, 11, 13, 19, 22, 26, 33, 38, 39, 57, 66, 78, 114, 143, 209, 247, 286, 418, 429, 494, 627, 741, 858, 1254, 1301, 1482, 2602, 2717, 3903, 5434, 7806, 8151, 14311, 16302, 16913, 24719, 28622, 33826, 42933, 49438, 50739, 74157, 85866, 101478, 148314, 186043, 271909, 321347, 372086, 543818, 558129, 642694, 815727, 964041, 1116258, 1631454, 1928082, 3534817, 7069634, 10604451, 21208902]

約数ペア:

[(1, 21208902), (2, 10604451), (3, 7069634), (6, 3534817), (11, 1928082), (13, 1631454), (19, 1116258), (22, 964041), (26, 815727), (33, 642694), (38, 558129), (39, 543818), (57, 372086), (66, 321347), (78, 271909), (114, 186043), (143, 148314), (209, 101478), (247, 85866), (286, 74157), (418, 50739), (429, 49438), (494, 42933), (627, 33826), (741, 28622), (858, 24719), (1254, 16913), (1301, 16302), (1482, 14311), (2602, 8151), (2717, 7806), (3903, 5434)]