220171900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{659}}^1$

素因数の和:943

約数の個数: 72

約数和(自身を含む): 517310640

約数和(自身を除く): 297138740

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 257, 260, 325, 514, 650, 659, 1028, 1285, 1300, 1318, 2570, 2636, 3295, 3341, 5140, 6425, 6590, 6682, 8567, 12850, 13180, 13364, 16475, 16705, 17134, 25700, 32950, 33410, 34268, 42835, 65900, 66820, 83525, 85670, 167050, 169363, 171340, 214175, 334100, 338726, 428350, 677452, 846815, 856700, 1693630, 2201719, 3387260, 4234075, 4403438, 8468150, 8806876, 11008595, 16936300, 22017190, 44034380, 55042975, 110085950, 220171900]

約数ペア:

[(1, 220171900), (2, 110085950), (4, 55042975), (5, 44034380), (10, 22017190), (13, 16936300), (20, 11008595), (25, 8806876), (26, 8468150), (50, 4403438), (52, 4234075), (65, 3387260), (100, 2201719), (130, 1693630), (257, 856700), (260, 846815), (325, 677452), (514, 428350), (650, 338726), (659, 334100), (1028, 214175), (1285, 171340), (1300, 169363), (1318, 167050), (2570, 85670), (2636, 83525), (3295, 66820), (3341, 65900), (5140, 42835), (6425, 34268), (6590, 33410), (6682, 32950), (8567, 25700), (12850, 17134), (13180, 16705), (13364, 16475)]