21423640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4027}}^1$

素因数の和:4064

約数の個数: 64

約数和(自身を含む): 58003200

約数和(自身を除く): 36579560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4027, 5320, 8054, 16108, 20135, 28189, 32216, 40270, 56378, 76513, 80540, 112756, 140945, 153026, 161080, 225512, 281890, 306052, 382565, 535591, 563780, 612104, 765130, 1071182, 1127560, 1530260, 2142364, 2677955, 3060520, 4284728, 5355910, 10711820, 21423640]

約数ペア:

[(1, 21423640), (2, 10711820), (4, 5355910), (5, 4284728), (7, 3060520), (8, 2677955), (10, 2142364), (14, 1530260), (19, 1127560), (20, 1071182), (28, 765130), (35, 612104), (38, 563780), (40, 535591), (56, 382565), (70, 306052), (76, 281890), (95, 225512), (133, 161080), (140, 153026), (152, 140945), (190, 112756), (266, 80540), (280, 76513), (380, 56378), (532, 40270), (665, 32216), (760, 28189), (1064, 20135), (1330, 16108), (2660, 8054), (4027, 5320)]