21427406

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:190

約数の個数: 72

約数和(自身を含む): 44576280

約数和(自身を除く): 23148874

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 49, 77, 91, 98, 121, 139, 143, 154, 182, 242, 278, 286, 539, 637, 847, 973, 1001, 1078, 1274, 1529, 1573, 1694, 1807, 1946, 2002, 3058, 3146, 3614, 5929, 6811, 7007, 10703, 11011, 11858, 12649, 13622, 14014, 16819, 19877, 21406, 22022, 25298, 33638, 39754, 74921, 77077, 88543, 117733, 139139, 149842, 154154, 177086, 218647, 235466, 278278, 437294, 824131, 973973, 1530529, 1648262, 1947946, 3061058, 10713703, 21427406]

約数ペア:

[(1, 21427406), (2, 10713703), (7, 3061058), (11, 1947946), (13, 1648262), (14, 1530529), (22, 973973), (26, 824131), (49, 437294), (77, 278278), (91, 235466), (98, 218647), (121, 177086), (139, 154154), (143, 149842), (154, 139139), (182, 117733), (242, 88543), (278, 77077), (286, 74921), (539, 39754), (637, 33638), (847, 25298), (973, 22022), (1001, 21406), (1078, 19877), (1274, 16819), (1529, 14014), (1573, 13622), (1694, 12649), (1807, 11858), (1946, 11011), (2002, 10703), (3058, 7007), (3146, 6811), (3614, 5929)]