19855980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110311}}^1$

素因数の和:110326

約数の個数: 36

約数和(自身を含む): 60230352

約数和(自身を除く): 40374372

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110311, 220622, 330933, 441244, 551555, 661866, 992799, 1103110, 1323732, 1654665, 1985598, 2206220, 3309330, 3971196, 4963995, 6618660, 9927990, 19855980]

約数ペア:

[(1, 19855980), (2, 9927990), (3, 6618660), (4, 4963995), (5, 3971196), (6, 3309330), (9, 2206220), (10, 1985598), (12, 1654665), (15, 1323732), (18, 1103110), (20, 992799), (30, 661866), (36, 551555), (45, 441244), (60, 330933), (90, 220622), (180, 110311)]