856722100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{997}}^1$

素因数の和:1685

約数の個数: 72

約数和(自身を含む): 2007133688

約数和(自身を除く): 1150411588

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 661, 997, 1300, 1322, 1994, 2644, 3305, 3988, 4985, 6610, 8593, 9970, 12961, 13220, 16525, 17186, 19940, 24925, 25922, 33050, 34372, 42965, 49850, 51844, 64805, 66100, 85930, 99700, 129610, 171860, 214825, 259220, 324025, 429650, 648050, 659017, 859300, 1296100, 1318034, 2636068, 3295085, 6590170, 8567221, 13180340, 16475425, 17134442, 32950850, 34268884, 42836105, 65901700, 85672210, 171344420, 214180525, 428361050, 856722100]

約数ペア:

[(1, 856722100), (2, 428361050), (4, 214180525), (5, 171344420), (10, 85672210), (13, 65901700), (20, 42836105), (25, 34268884), (26, 32950850), (50, 17134442), (52, 16475425), (65, 13180340), (100, 8567221), (130, 6590170), (260, 3295085), (325, 2636068), (650, 1318034), (661, 1296100), (997, 859300), (1300, 659017), (1322, 648050), (1994, 429650), (2644, 324025), (3305, 259220), (3988, 214825), (4985, 171860), (6610, 129610), (8593, 99700), (9970, 85930), (12961, 66100), (13220, 64805), (16525, 51844), (17186, 49850), (19940, 42965), (24925, 34372), (25922, 33050)]