20107920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11969}}^1$

素因数の和:11992

約数の個数: 80

約数和(自身を含む): 71245440

約数和(自身を除く): 51137520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 11969, 23938, 35907, 47876, 59845, 71814, 83783, 95752, 119690, 143628, 167566, 179535, 191504, 239380, 251349, 287256, 335132, 359070, 418915, 478760, 502698, 574512, 670264, 718140, 837830, 957520, 1005396, 1256745, 1340528, 1436280, 1675660, 2010792, 2513490, 2872560, 3351320, 4021584, 5026980, 6702640, 10053960, 20107920]

約数ペア:

[(1, 20107920), (2, 10053960), (3, 6702640), (4, 5026980), (5, 4021584), (6, 3351320), (7, 2872560), (8, 2513490), (10, 2010792), (12, 1675660), (14, 1436280), (15, 1340528), (16, 1256745), (20, 1005396), (21, 957520), (24, 837830), (28, 718140), (30, 670264), (35, 574512), (40, 502698), (42, 478760), (48, 418915), (56, 359070), (60, 335132), (70, 287256), (80, 251349), (84, 239380), (105, 191504), (112, 179535), (120, 167566), (140, 143628), (168, 119690), (210, 95752), (240, 83783), (280, 71814), (336, 59845), (420, 47876), (560, 35907), (840, 23938), (1680, 11969)]