1981192560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{21221}}^1$

素因数の和:21626

約数の個数: 80

約数和(自身を含む): 6157775520

約数和(自身を除く): 4176582960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 389, 778, 1167, 1556, 1945, 2334, 3112, 3890, 4668, 5835, 6224, 7780, 9336, 11670, 15560, 18672, 21221, 23340, 31120, 42442, 46680, 63663, 84884, 93360, 106105, 127326, 169768, 212210, 254652, 318315, 339536, 424420, 509304, 636630, 848840, 1018608, 1273260, 1697680, 2546520, 5093040, 8254969, 16509938, 24764907, 33019876, 41274845, 49529814, 66039752, 82549690, 99059628, 123824535, 132079504, 165099380, 198119256, 247649070, 330198760, 396238512, 495298140, 660397520, 990596280, 1981192560]

約数ペア:

[(1, 1981192560), (2, 990596280), (3, 660397520), (4, 495298140), (5, 396238512), (6, 330198760), (8, 247649070), (10, 198119256), (12, 165099380), (15, 132079504), (16, 123824535), (20, 99059628), (24, 82549690), (30, 66039752), (40, 49529814), (48, 41274845), (60, 33019876), (80, 24764907), (120, 16509938), (240, 8254969), (389, 5093040), (778, 2546520), (1167, 1697680), (1556, 1273260), (1945, 1018608), (2334, 848840), (3112, 636630), (3890, 509304), (4668, 424420), (5835, 339536), (6224, 318315), (7780, 254652), (9336, 212210), (11670, 169768), (15560, 127326), (18672, 106105), (21221, 93360), (23340, 84884), (31120, 63663), (42442, 46680)]