1917990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 5060016

約数和(自身を除く): 3142026

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 101, 202, 211, 303, 422, 505, 606, 633, 909, 1010, 1055, 1266, 1515, 1818, 1899, 2110, 3030, 3165, 3798, 4545, 6330, 9090, 9495, 18990, 21311, 42622, 63933, 106555, 127866, 191799, 213110, 319665, 383598, 639330, 958995, 1917990]

約数ペア:

[(1, 1917990), (2, 958995), (3, 639330), (5, 383598), (6, 319665), (9, 213110), (10, 191799), (15, 127866), (18, 106555), (30, 63933), (45, 42622), (90, 21311), (101, 18990), (202, 9495), (211, 9090), (303, 6330), (422, 4545), (505, 3798), (606, 3165), (633, 3030), (909, 2110), (1010, 1899), (1055, 1818), (1266, 1515)]