28378740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36383}}^1$

素因数の和:36408

約数の個数: 48

約数和(自身を含む): 85575168

約数和(自身を除く): 57196428

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 36383, 72766, 109149, 145532, 181915, 218298, 363830, 436596, 472979, 545745, 727660, 945958, 1091490, 1418937, 1891916, 2182980, 2364895, 2837874, 4729790, 5675748, 7094685, 9459580, 14189370, 28378740]

約数ペア:

[(1, 28378740), (2, 14189370), (3, 9459580), (4, 7094685), (5, 5675748), (6, 4729790), (10, 2837874), (12, 2364895), (13, 2182980), (15, 1891916), (20, 1418937), (26, 1091490), (30, 945958), (39, 727660), (52, 545745), (60, 472979), (65, 436596), (78, 363830), (130, 218298), (156, 181915), (195, 145532), (260, 109149), (390, 72766), (780, 36383)]