649781855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 905748480

約数和(自身を除く): 255966625

約数列:

[1, 5, 19, 23, 31, 53, 95, 115, 155, 181, 265, 437, 589, 713, 905, 1007, 1219, 1643, 2185, 2945, 3439, 3565, 4163, 5035, 5611, 6095, 8215, 9593, 13547, 17195, 20815, 23161, 28055, 31217, 37789, 47965, 67735, 79097, 106609, 115805, 129053, 156085, 182267, 188945, 220639, 297383, 395485, 533045, 645265, 717991, 911335, 1103195, 1486915, 2452007, 3589955, 4192141, 5650277, 6839809, 12260035, 20960705, 28251385, 34199045, 129956371, 649781855]

約数ペア:

[(1, 649781855), (5, 129956371), (19, 34199045), (23, 28251385), (31, 20960705), (53, 12260035), (95, 6839809), (115, 5650277), (155, 4192141), (181, 3589955), (265, 2452007), (437, 1486915), (589, 1103195), (713, 911335), (905, 717991), (1007, 645265), (1219, 533045), (1643, 395485), (2185, 297383), (2945, 220639), (3439, 188945), (3565, 182267), (4163, 156085), (5035, 129053), (5611, 115805), (6095, 106609), (8215, 79097), (9593, 67735), (13547, 47965), (17195, 37789), (20815, 31217), (23161, 28055)]