489688420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:781

約数の個数: 96

約数和(自身を含む): 1152216576

約数和(自身を除く): 662528156

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 71, 82, 130, 142, 164, 205, 260, 284, 355, 410, 533, 647, 710, 820, 923, 1066, 1294, 1420, 1846, 2132, 2588, 2665, 2911, 3235, 3692, 4615, 5330, 5822, 6470, 8411, 9230, 10660, 11644, 12940, 14555, 16822, 18460, 26527, 29110, 33644, 37843, 42055, 45937, 53054, 58220, 75686, 84110, 91874, 106108, 132635, 151372, 168220, 183748, 189215, 229685, 265270, 344851, 378430, 459370, 530540, 597181, 689702, 756860, 918740, 1194362, 1379404, 1724255, 1883417, 2388724, 2985905, 3448510, 3766834, 5971810, 6897020, 7533668, 9417085, 11943620, 18834170, 24484421, 37668340, 48968842, 97937684, 122422105, 244844210, 489688420]

約数ペア:

[(1, 489688420), (2, 244844210), (4, 122422105), (5, 97937684), (10, 48968842), (13, 37668340), (20, 24484421), (26, 18834170), (41, 11943620), (52, 9417085), (65, 7533668), (71, 6897020), (82, 5971810), (130, 3766834), (142, 3448510), (164, 2985905), (205, 2388724), (260, 1883417), (284, 1724255), (355, 1379404), (410, 1194362), (533, 918740), (647, 756860), (710, 689702), (820, 597181), (923, 530540), (1066, 459370), (1294, 378430), (1420, 344851), (1846, 265270), (2132, 229685), (2588, 189215), (2665, 183748), (2911, 168220), (3235, 151372), (3692, 132635), (4615, 106108), (5330, 91874), (5822, 84110), (6470, 75686), (8411, 58220), (9230, 53054), (10660, 45937), (11644, 42055), (12940, 37843), (14555, 33644), (16822, 29110), (18460, 26527)]