664886456

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{19793}}^1$

素因数の和:19848

約数の個数: 64

約数和(自身を含む): 1496426400

約数和(自身を除く): 831539944

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 646, 884, 988, 1292, 1768, 1976, 2584, 4199, 8398, 16796, 19793, 33592, 39586, 79172, 158344, 257309, 336481, 376067, 514618, 672962, 752134, 1029236, 1345924, 1504268, 2058472, 2691848, 3008536, 4374253, 4888871, 6393139, 8748506, 9777742, 12786278, 17497012, 19555484, 25572556, 34994024, 39110968, 51145112, 83110807, 166221614, 332443228, 664886456]

約数ペア:

[(1, 664886456), (2, 332443228), (4, 166221614), (8, 83110807), (13, 51145112), (17, 39110968), (19, 34994024), (26, 25572556), (34, 19555484), (38, 17497012), (52, 12786278), (68, 9777742), (76, 8748506), (104, 6393139), (136, 4888871), (152, 4374253), (221, 3008536), (247, 2691848), (323, 2058472), (442, 1504268), (494, 1345924), (646, 1029236), (884, 752134), (988, 672962), (1292, 514618), (1768, 376067), (1976, 336481), (2584, 257309), (4199, 158344), (8398, 79172), (16796, 39586), (19793, 33592)]