865020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1109}}^1$

素因数の和:1134

約数の個数: 48

約数和(自身を含む): 2610720

約数和(自身を除く): 1745700

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, 1109, 2218, 3327, 4436, 5545, 6654, 11090, 13308, 14417, 16635, 22180, 28834, 33270, 43251, 57668, 66540, 72085, 86502, 144170, 173004, 216255, 288340, 432510, 865020]

約数ペア:

[(1, 865020), (2, 432510), (3, 288340), (4, 216255), (5, 173004), (6, 144170), (10, 86502), (12, 72085), (13, 66540), (15, 57668), (20, 43251), (26, 33270), (30, 28834), (39, 22180), (52, 16635), (60, 14417), (65, 13308), (78, 11090), (130, 6654), (156, 5545), (195, 4436), (260, 3327), (390, 2218), (780, 1109)]