21342776

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1543}}^1$

素因数の和:1588

約数の個数: 64

約数和(自身を含む): 51878400

約数和(自身を除く): 30535624

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 133, 152, 182, 247, 266, 364, 494, 532, 728, 988, 1064, 1543, 1729, 1976, 3086, 3458, 6172, 6916, 10801, 12344, 13832, 20059, 21602, 29317, 40118, 43204, 58634, 80236, 86408, 117268, 140413, 160472, 205219, 234536, 280826, 381121, 410438, 561652, 762242, 820876, 1123304, 1524484, 1641752, 2667847, 3048968, 5335694, 10671388, 21342776]

約数ペア:

[(1, 21342776), (2, 10671388), (4, 5335694), (7, 3048968), (8, 2667847), (13, 1641752), (14, 1524484), (19, 1123304), (26, 820876), (28, 762242), (38, 561652), (52, 410438), (56, 381121), (76, 280826), (91, 234536), (104, 205219), (133, 160472), (152, 140413), (182, 117268), (247, 86408), (266, 80236), (364, 58634), (494, 43204), (532, 40118), (728, 29317), (988, 21602), (1064, 20059), (1543, 13832), (1729, 12344), (1976, 10801), (3086, 6916), (3458, 6172)]