1640415088

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{20809}}^1$

素因数の和:21209

約数の個数: 40

約数和(自身を含む): 3431985200

約数和(自身を除く): 1791570112

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 379, 758, 1516, 3032, 4927, 6064, 9854, 19708, 20809, 39416, 41618, 78832, 83236, 166472, 270517, 332944, 541034, 1082068, 2164136, 4328272, 7886611, 15773222, 31546444, 63092888, 102525943, 126185776, 205051886, 410103772, 820207544, 1640415088]

約数ペア:

[(1, 1640415088), (2, 820207544), (4, 410103772), (8, 205051886), (13, 126185776), (16, 102525943), (26, 63092888), (52, 31546444), (104, 15773222), (208, 7886611), (379, 4328272), (758, 2164136), (1516, 1082068), (3032, 541034), (4927, 332944), (6064, 270517), (9854, 166472), (19708, 83236), (20809, 78832), (39416, 41618)]