21155888910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{216119}}^1$

素因数の和:216393

約数の個数: 64

約数和(自身を含む): 54897937920

約数和(自身を除く): 33742049010

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 251, 390, 502, 753, 1255, 1506, 2510, 3263, 3765, 6526, 7530, 9789, 16315, 19578, 32630, 48945, 97890, 216119, 432238, 648357, 1080595, 1296714, 2161190, 2809547, 3241785, 5619094, 6483570, 8428641, 14047735, 16857282, 28095470, 42143205, 54245869, 84286410, 108491738, 162737607, 271229345, 325475214, 542458690, 705196297, 813688035, 1410392594, 1627376070, 2115588891, 3525981485, 4231177782, 7051962970, 10577944455, 21155888910]

約数ペア:

[(1, 21155888910), (2, 10577944455), (3, 7051962970), (5, 4231177782), (6, 3525981485), (10, 2115588891), (13, 1627376070), (15, 1410392594), (26, 813688035), (30, 705196297), (39, 542458690), (65, 325475214), (78, 271229345), (130, 162737607), (195, 108491738), (251, 84286410), (390, 54245869), (502, 42143205), (753, 28095470), (1255, 16857282), (1506, 14047735), (2510, 8428641), (3263, 6483570), (3765, 5619094), (6526, 3241785), (7530, 2809547), (9789, 2161190), (16315, 1296714), (19578, 1080595), (32630, 648357), (48945, 432238), (97890, 216119)]