19818960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:321

約数の個数: 160

約数和(自身を含む): 71995392

約数和(自身を除く): 52176432

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 47, 48, 56, 60, 70, 80, 84, 94, 105, 112, 120, 140, 141, 168, 188, 210, 235, 240, 251, 280, 282, 329, 336, 376, 420, 470, 502, 560, 564, 658, 705, 752, 753, 840, 940, 987, 1004, 1128, 1255, 1316, 1410, 1506, 1645, 1680, 1757, 1880, 1974, 2008, 2256, 2510, 2632, 2820, 3012, 3290, 3514, 3760, 3765, 3948, 4016, 4935, 5020, 5264, 5271, 5640, 6024, 6580, 7028, 7530, 7896, 8785, 9870, 10040, 10542, 11280, 11797, 12048, 13160, 14056, 15060, 15792, 17570, 19740, 20080, 21084, 23594, 26320, 26355, 28112, 30120, 35140, 35391, 39480, 42168, 47188, 52710, 58985, 60240, 70280, 70782, 78960, 82579, 84336, 94376, 105420, 117970, 140560, 141564, 165158, 176955, 188752, 210840, 235940, 247737, 283128, 330316, 353910, 412895, 421680, 471880, 495474, 566256, 660632, 707820, 825790, 943760, 990948, 1238685, 1321264, 1415640, 1651580, 1981896, 2477370, 2831280, 3303160, 3963792, 4954740, 6606320, 9909480, 19818960]

約数ペア:

[(1, 19818960), (2, 9909480), (3, 6606320), (4, 4954740), (5, 3963792), (6, 3303160), (7, 2831280), (8, 2477370), (10, 1981896), (12, 1651580), (14, 1415640), (15, 1321264), (16, 1238685), (20, 990948), (21, 943760), (24, 825790), (28, 707820), (30, 660632), (35, 566256), (40, 495474), (42, 471880), (47, 421680), (48, 412895), (56, 353910), (60, 330316), (70, 283128), (80, 247737), (84, 235940), (94, 210840), (105, 188752), (112, 176955), (120, 165158), (140, 141564), (141, 140560), (168, 117970), (188, 105420), (210, 94376), (235, 84336), (240, 82579), (251, 78960), (280, 70782), (282, 70280), (329, 60240), (336, 58985), (376, 52710), (420, 47188), (470, 42168), (502, 39480), (560, 35391), (564, 35140), (658, 30120), (705, 28112), (752, 26355), (753, 26320), (840, 23594), (940, 21084), (987, 20080), (1004, 19740), (1128, 17570), (1255, 15792), (1316, 15060), (1410, 14056), (1506, 13160), (1645, 12048), (1680, 11797), (1757, 11280), (1880, 10542), (1974, 10040), (2008, 9870), (2256, 8785), (2510, 7896), (2632, 7530), (2820, 7028), (3012, 6580), (3290, 6024), (3514, 5640), (3760, 5271), (3765, 5264), (3948, 5020), (4016, 4935)]