18890640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{26237}}^1$

素因数の和:26256

約数の個数: 60

約数和(自身を含む): 63443484

約数和(自身を除く): 44552844

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 26237, 52474, 78711, 104948, 131185, 157422, 209896, 236133, 262370, 314844, 393555, 419792, 472266, 524740, 629688, 787110, 944532, 1049480, 1180665, 1259376, 1574220, 1889064, 2098960, 2361330, 3148440, 3778128, 4722660, 6296880, 9445320, 18890640]

約数ペア:

[(1, 18890640), (2, 9445320), (3, 6296880), (4, 4722660), (5, 3778128), (6, 3148440), (8, 2361330), (9, 2098960), (10, 1889064), (12, 1574220), (15, 1259376), (16, 1180665), (18, 1049480), (20, 944532), (24, 787110), (30, 629688), (36, 524740), (40, 472266), (45, 419792), (48, 393555), (60, 314844), (72, 262370), (80, 236133), (90, 209896), (120, 157422), (144, 131185), (180, 104948), (240, 78711), (360, 52474), (720, 26237)]