28262780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:375

約数の個数: 96

約数和(自身を含む): 74680704

約数和(自身を除く): 46417924

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 53, 65, 70, 91, 106, 130, 140, 182, 212, 260, 265, 293, 364, 371, 455, 530, 586, 689, 742, 910, 1060, 1172, 1378, 1465, 1484, 1820, 1855, 2051, 2756, 2930, 3445, 3710, 3809, 4102, 4823, 5860, 6890, 7420, 7618, 8204, 9646, 10255, 13780, 15236, 15529, 19045, 19292, 20510, 24115, 26663, 31058, 38090, 41020, 48230, 53326, 62116, 76180, 77645, 96460, 106652, 108703, 133315, 155290, 201877, 217406, 266630, 310580, 403754, 434812, 533260, 543515, 807508, 1009385, 1087030, 1413139, 2018770, 2174060, 2826278, 4037540, 5652556, 7065695, 14131390, 28262780]

約数ペア:

[(1, 28262780), (2, 14131390), (4, 7065695), (5, 5652556), (7, 4037540), (10, 2826278), (13, 2174060), (14, 2018770), (20, 1413139), (26, 1087030), (28, 1009385), (35, 807508), (52, 543515), (53, 533260), (65, 434812), (70, 403754), (91, 310580), (106, 266630), (130, 217406), (140, 201877), (182, 155290), (212, 133315), (260, 108703), (265, 106652), (293, 96460), (364, 77645), (371, 76180), (455, 62116), (530, 53326), (586, 48230), (689, 41020), (742, 38090), (910, 31058), (1060, 26663), (1172, 24115), (1378, 20510), (1465, 19292), (1484, 19045), (1820, 15529), (1855, 15236), (2051, 13780), (2756, 10255), (2930, 9646), (3445, 8204), (3710, 7618), (3809, 7420), (4102, 6890), (4823, 5860)]