20218103140

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{229}}^2\times {\mathrm{521}}^1$

素因数の和:1025

約数の個数: 72

約数和(自身を含む): 43880842152

約数和(自身を除く): 23662739012

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 229, 370, 458, 521, 740, 916, 1042, 1145, 2084, 2290, 2605, 4580, 5210, 8473, 10420, 16946, 19277, 33892, 38554, 42365, 52441, 77108, 84730, 96385, 104882, 119309, 169460, 192770, 209764, 238618, 262205, 385540, 477236, 524410, 596545, 1048820, 1193090, 1940317, 2386180, 3880634, 4414433, 7761268, 8828866, 9701585, 17657732, 19403170, 22072165, 27321761, 38806340, 44144330, 54643522, 88288660, 109287044, 136608805, 273217610, 546435220, 1010905157, 2021810314, 4043620628, 5054525785, 10109051570, 20218103140]

約数ペア:

[(1, 20218103140), (2, 10109051570), (4, 5054525785), (5, 4043620628), (10, 2021810314), (20, 1010905157), (37, 546435220), (74, 273217610), (148, 136608805), (185, 109287044), (229, 88288660), (370, 54643522), (458, 44144330), (521, 38806340), (740, 27321761), (916, 22072165), (1042, 19403170), (1145, 17657732), (2084, 9701585), (2290, 8828866), (2605, 7761268), (4580, 4414433), (5210, 3880634), (8473, 2386180), (10420, 1940317), (16946, 1193090), (19277, 1048820), (33892, 596545), (38554, 524410), (42365, 477236), (52441, 385540), (77108, 262205), (84730, 238618), (96385, 209764), (104882, 192770), (119309, 169460)]