18938478840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{321427}}^1$

素因数の和:321932

約数の個数: 64

約数和(自身を含む): 56931327360

約数和(自身を除く): 37992848520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 491, 982, 1473, 1964, 2455, 2946, 3928, 4910, 5892, 7365, 9820, 11784, 14730, 19640, 29460, 58920, 321427, 642854, 964281, 1285708, 1607135, 1928562, 2571416, 3214270, 3857124, 4821405, 6428540, 7714248, 9642810, 12857080, 19285620, 38571240, 157820657, 315641314, 473461971, 631282628, 789103285, 946923942, 1262565256, 1578206570, 1893847884, 2367309855, 3156413140, 3787695768, 4734619710, 6312826280, 9469239420, 18938478840]

約数ペア:

[(1, 18938478840), (2, 9469239420), (3, 6312826280), (4, 4734619710), (5, 3787695768), (6, 3156413140), (8, 2367309855), (10, 1893847884), (12, 1578206570), (15, 1262565256), (20, 946923942), (24, 789103285), (30, 631282628), (40, 473461971), (60, 315641314), (120, 157820657), (491, 38571240), (982, 19285620), (1473, 12857080), (1964, 9642810), (2455, 7714248), (2946, 6428540), (3928, 4821405), (4910, 3857124), (5892, 3214270), (7365, 2571416), (9820, 1928562), (11784, 1607135), (14730, 1285708), (19640, 964281), (29460, 642854), (58920, 321427)]