81408920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{6301}}^1$

素因数の和:6348

約数の個数: 64

約数和(自身を含む): 204184800

約数和(自身を除く): 122775880

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 2584, 3230, 6301, 6460, 12602, 12920, 25204, 31505, 50408, 63010, 107117, 119719, 126020, 214234, 239438, 252040, 428468, 478876, 535585, 598595, 856936, 957752, 1071170, 1197190, 2035223, 2142340, 2394380, 4070446, 4284680, 4788760, 8140892, 10176115, 16281784, 20352230, 40704460, 81408920]

約数ペア:

[(1, 81408920), (2, 40704460), (4, 20352230), (5, 16281784), (8, 10176115), (10, 8140892), (17, 4788760), (19, 4284680), (20, 4070446), (34, 2394380), (38, 2142340), (40, 2035223), (68, 1197190), (76, 1071170), (85, 957752), (95, 856936), (136, 598595), (152, 535585), (170, 478876), (190, 428468), (323, 252040), (340, 239438), (380, 214234), (646, 126020), (680, 119719), (760, 107117), (1292, 63010), (1615, 50408), (2584, 31505), (3230, 25204), (6301, 12920), (6460, 12602)]