423800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 1067640

約数和(自身を除く): 643840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 163, 200, 260, 325, 326, 520, 650, 652, 815, 1300, 1304, 1630, 2119, 2600, 3260, 4075, 4238, 6520, 8150, 8476, 10595, 16300, 16952, 21190, 32600, 42380, 52975, 84760, 105950, 211900, 423800]

約数ペア:

[(1, 423800), (2, 211900), (4, 105950), (5, 84760), (8, 52975), (10, 42380), (13, 32600), (20, 21190), (25, 16952), (26, 16300), (40, 10595), (50, 8476), (52, 8150), (65, 6520), (100, 4238), (104, 4075), (130, 3260), (163, 2600), (200, 2119), (260, 1630), (325, 1304), (326, 1300), (520, 815), (650, 652)]