64821825

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 124768800

約数和(自身を除く): 59946975

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 59, 75, 95, 171, 177, 225, 257, 285, 295, 475, 531, 771, 855, 885, 1121, 1285, 1425, 1475, 2313, 2655, 3363, 3855, 4275, 4425, 4883, 5605, 6425, 10089, 11565, 13275, 14649, 15163, 16815, 19275, 24415, 28025, 43947, 45489, 50445, 57825, 73245, 75815, 84075, 122075, 136467, 219735, 227445, 252225, 288097, 366225, 379075, 682335, 864291, 1098675, 1137225, 1440485, 2592873, 3411675, 4321455, 7202425, 12964365, 21607275, 64821825]

約数ペア:

[(1, 64821825), (3, 21607275), (5, 12964365), (9, 7202425), (15, 4321455), (19, 3411675), (25, 2592873), (45, 1440485), (57, 1137225), (59, 1098675), (75, 864291), (95, 682335), (171, 379075), (177, 366225), (225, 288097), (257, 252225), (285, 227445), (295, 219735), (475, 136467), (531, 122075), (771, 84075), (855, 75815), (885, 73245), (1121, 57825), (1285, 50445), (1425, 45489), (1475, 43947), (2313, 28025), (2655, 24415), (3363, 19275), (3855, 16815), (4275, 15163), (4425, 14649), (4883, 13275), (5605, 11565), (6425, 10089)]