81960760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292717}}^1$

素因数の和:292735

約数の個数: 32

約数和(自身を含む): 210756960

約数和(自身を除く): 128796200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292717, 585434, 1170868, 1463585, 2049019, 2341736, 2927170, 4098038, 5854340, 8196076, 10245095, 11708680, 16392152, 20490190, 40980380, 81960760]

約数ペア:

[(1, 81960760), (2, 40980380), (4, 20490190), (5, 16392152), (7, 11708680), (8, 10245095), (10, 8196076), (14, 5854340), (20, 4098038), (28, 2927170), (35, 2341736), (40, 2049019), (56, 1463585), (70, 1170868), (140, 585434), (280, 292717)]