389220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 1176000

約数和(自身を除く): 786780

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, 499, 780, 998, 1497, 1996, 2495, 2994, 4990, 5988, 6487, 7485, 9980, 12974, 14970, 19461, 25948, 29940, 32435, 38922, 64870, 77844, 97305, 129740, 194610, 389220]

約数ペア:

[(1, 389220), (2, 194610), (3, 129740), (4, 97305), (5, 77844), (6, 64870), (10, 38922), (12, 32435), (13, 29940), (15, 25948), (20, 19461), (26, 14970), (30, 12974), (39, 9980), (52, 7485), (60, 6487), (65, 5988), (78, 4990), (130, 2994), (156, 2495), (195, 1996), (260, 1497), (390, 998), (499, 780)]