720172222

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2473}}^1$

素因数の和:2585

約数の個数: 64

約数和(自身を含む): 1413623808

約数和(自身を除く): 693451586

約数列:

[1, 2, 7, 11, 14, 22, 31, 61, 62, 77, 122, 154, 217, 341, 427, 434, 671, 682, 854, 1342, 1891, 2387, 2473, 3782, 4697, 4774, 4946, 9394, 13237, 17311, 20801, 26474, 27203, 34622, 41602, 54406, 76663, 145607, 150853, 153326, 190421, 291214, 301706, 380842, 536641, 843293, 1055971, 1073282, 1659383, 1686586, 2111942, 3318766, 4676443, 5903051, 9352886, 11615681, 11806102, 23231362, 32735101, 51440873, 65470202, 102881746, 360086111, 720172222]

約数ペア:

[(1, 720172222), (2, 360086111), (7, 102881746), (11, 65470202), (14, 51440873), (22, 32735101), (31, 23231362), (61, 11806102), (62, 11615681), (77, 9352886), (122, 5903051), (154, 4676443), (217, 3318766), (341, 2111942), (427, 1686586), (434, 1659383), (671, 1073282), (682, 1055971), (854, 843293), (1342, 536641), (1891, 380842), (2387, 301706), (2473, 291214), (3782, 190421), (4697, 153326), (4774, 150853), (4946, 145607), (9394, 76663), (13237, 54406), (17311, 41602), (20801, 34622), (26474, 27203)]