81282040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 96

約数和(自身を含む): 215347680

約数和(自身を除く): 134065640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 157, 172, 215, 280, 301, 314, 344, 430, 602, 628, 785, 860, 1099, 1204, 1256, 1505, 1570, 1720, 1849, 2198, 2408, 3010, 3140, 3698, 4396, 5495, 6020, 6280, 6751, 7396, 8792, 9245, 10990, 12040, 12943, 13502, 14792, 18490, 21980, 25886, 27004, 33755, 36980, 43960, 47257, 51772, 54008, 64715, 67510, 73960, 94514, 103544, 129430, 135020, 189028, 236285, 258860, 270040, 290293, 378056, 472570, 517720, 580586, 945140, 1161172, 1451465, 1890280, 2032051, 2322344, 2902930, 4064102, 5805860, 8128204, 10160255, 11611720, 16256408, 20320510, 40641020, 81282040]

約数ペア:

[(1, 81282040), (2, 40641020), (4, 20320510), (5, 16256408), (7, 11611720), (8, 10160255), (10, 8128204), (14, 5805860), (20, 4064102), (28, 2902930), (35, 2322344), (40, 2032051), (43, 1890280), (56, 1451465), (70, 1161172), (86, 945140), (140, 580586), (157, 517720), (172, 472570), (215, 378056), (280, 290293), (301, 270040), (314, 258860), (344, 236285), (430, 189028), (602, 135020), (628, 129430), (785, 103544), (860, 94514), (1099, 73960), (1204, 67510), (1256, 64715), (1505, 54008), (1570, 51772), (1720, 47257), (1849, 43960), (2198, 36980), (2408, 33755), (3010, 27004), (3140, 25886), (3698, 21980), (4396, 18490), (5495, 14792), (6020, 13502), (6280, 12943), (6751, 12040), (7396, 10990), (8792, 9245)]