20047995

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 38379744

約数和(自身を除く): 18331749

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 101, 165, 303, 401, 495, 505, 909, 1111, 1203, 1515, 2005, 3333, 3609, 4411, 4545, 5555, 6015, 9999, 13233, 16665, 18045, 22055, 39699, 40501, 49995, 66165, 121503, 198495, 202505, 364509, 445511, 607515, 1336533, 1822545, 2227555, 4009599, 6682665, 20047995]

約数ペア:

[(1, 20047995), (3, 6682665), (5, 4009599), (9, 2227555), (11, 1822545), (15, 1336533), (33, 607515), (45, 445511), (55, 364509), (99, 202505), (101, 198495), (165, 121503), (303, 66165), (401, 49995), (495, 40501), (505, 39699), (909, 22055), (1111, 18045), (1203, 16665), (1515, 13233), (2005, 9999), (3333, 6015), (3609, 5555), (4411, 4545)]