20074640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:360

約数の個数: 80

約数和(自身を含む): 50353920

約数和(自身を除く): 30279280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 47, 76, 80, 94, 95, 152, 188, 190, 235, 281, 304, 376, 380, 470, 562, 752, 760, 893, 940, 1124, 1405, 1520, 1786, 1880, 2248, 2810, 3572, 3760, 4465, 4496, 5339, 5620, 7144, 8930, 10678, 11240, 13207, 14288, 17860, 21356, 22480, 26414, 26695, 35720, 42712, 52828, 53390, 66035, 71440, 85424, 105656, 106780, 132070, 211312, 213560, 250933, 264140, 427120, 501866, 528280, 1003732, 1056560, 1254665, 2007464, 2509330, 4014928, 5018660, 10037320, 20074640]

約数ペア:

[(1, 20074640), (2, 10037320), (4, 5018660), (5, 4014928), (8, 2509330), (10, 2007464), (16, 1254665), (19, 1056560), (20, 1003732), (38, 528280), (40, 501866), (47, 427120), (76, 264140), (80, 250933), (94, 213560), (95, 211312), (152, 132070), (188, 106780), (190, 105656), (235, 85424), (281, 71440), (304, 66035), (376, 53390), (380, 52828), (470, 42712), (562, 35720), (752, 26695), (760, 26414), (893, 22480), (940, 21356), (1124, 17860), (1405, 14288), (1520, 13207), (1786, 11240), (1880, 10678), (2248, 8930), (2810, 7144), (3572, 5620), (3760, 5339), (4465, 4496)]