19788840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:344

約数の個数: 128

約数和(自身を含む): 67132800

約数和(自身を除く): 47343960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 73, 90, 108, 120, 135, 146, 180, 216, 219, 251, 270, 292, 360, 365, 438, 502, 540, 584, 657, 730, 753, 876, 1004, 1080, 1095, 1255, 1314, 1460, 1506, 1752, 1971, 2008, 2190, 2259, 2510, 2628, 2920, 3012, 3285, 3765, 3942, 4380, 4518, 5020, 5256, 6024, 6570, 6777, 7530, 7884, 8760, 9036, 9855, 10040, 11295, 13140, 13554, 15060, 15768, 18072, 18323, 19710, 22590, 26280, 27108, 30120, 33885, 36646, 39420, 45180, 54216, 54969, 67770, 73292, 78840, 90360, 91615, 109938, 135540, 146584, 164907, 183230, 219876, 271080, 274845, 329814, 366460, 439752, 494721, 549690, 659628, 732920, 824535, 989442, 1099380, 1319256, 1649070, 1978884, 2198760, 2473605, 3298140, 3957768, 4947210, 6596280, 9894420, 19788840]

約数ペア:

[(1, 19788840), (2, 9894420), (3, 6596280), (4, 4947210), (5, 3957768), (6, 3298140), (8, 2473605), (9, 2198760), (10, 1978884), (12, 1649070), (15, 1319256), (18, 1099380), (20, 989442), (24, 824535), (27, 732920), (30, 659628), (36, 549690), (40, 494721), (45, 439752), (54, 366460), (60, 329814), (72, 274845), (73, 271080), (90, 219876), (108, 183230), (120, 164907), (135, 146584), (146, 135540), (180, 109938), (216, 91615), (219, 90360), (251, 78840), (270, 73292), (292, 67770), (360, 54969), (365, 54216), (438, 45180), (502, 39420), (540, 36646), (584, 33885), (657, 30120), (730, 27108), (753, 26280), (876, 22590), (1004, 19710), (1080, 18323), (1095, 18072), (1255, 15768), (1314, 15060), (1460, 13554), (1506, 13140), (1752, 11295), (1971, 10040), (2008, 9855), (2190, 9036), (2259, 8760), (2510, 7884), (2628, 7530), (2920, 6777), (3012, 6570), (3285, 6024), (3765, 5256), (3942, 5020), (4380, 4518)]