28294890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72551}}^1$

素因数の和:72574

約数の個数: 32

約数和(自身を含む): 73132416

約数和(自身を除く): 44837526

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 72551, 145102, 217653, 362755, 435306, 725510, 943163, 1088265, 1886326, 2176530, 2829489, 4715815, 5658978, 9431630, 14147445, 28294890]

約数ペア:

[(1, 28294890), (2, 14147445), (3, 9431630), (5, 5658978), (6, 4715815), (10, 2829489), (13, 2176530), (15, 1886326), (26, 1088265), (30, 943163), (39, 725510), (65, 435306), (78, 362755), (130, 217653), (195, 145102), (390, 72551)]