81626360

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 189151200

約数和(自身を除く): 107524840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 139, 212, 265, 277, 278, 424, 530, 554, 556, 695, 1060, 1108, 1112, 1385, 1390, 2120, 2216, 2770, 2780, 5540, 5560, 7367, 11080, 14681, 14734, 29362, 29468, 36835, 38503, 58724, 58936, 73405, 73670, 77006, 117448, 146810, 147340, 154012, 192515, 293620, 294680, 308024, 385030, 587240, 770060, 1540120, 2040659, 4081318, 8162636, 10203295, 16325272, 20406590, 40813180, 81626360]

約数ペア:

[(1, 81626360), (2, 40813180), (4, 20406590), (5, 16325272), (8, 10203295), (10, 8162636), (20, 4081318), (40, 2040659), (53, 1540120), (106, 770060), (139, 587240), (212, 385030), (265, 308024), (277, 294680), (278, 293620), (424, 192515), (530, 154012), (554, 147340), (556, 146810), (695, 117448), (1060, 77006), (1108, 73670), (1112, 73405), (1385, 58936), (1390, 58724), (2120, 38503), (2216, 36835), (2770, 29468), (2780, 29362), (5540, 14734), (5560, 14681), (7367, 11080)]