1289840

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{701}}^1$

素因数の和:737

約数の個数: 40

約数和(自身を含む): 3133728

約数和(自身を除く): 1843888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 701, 920, 1402, 1840, 2804, 3505, 5608, 7010, 11216, 14020, 16123, 28040, 32246, 56080, 64492, 80615, 128984, 161230, 257968, 322460, 644920, 1289840]

約数ペア:

[(1, 1289840), (2, 644920), (4, 322460), (5, 257968), (8, 161230), (10, 128984), (16, 80615), (20, 64492), (23, 56080), (40, 32246), (46, 28040), (80, 16123), (92, 14020), (115, 11216), (184, 7010), (230, 5608), (368, 3505), (460, 2804), (701, 1840), (920, 1402)]