21869080

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{6143}}^1$

素因数の和:6243

約数の個数: 32

約数和(自身を含む): 49766400

約数和(自身を除く): 27897320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 6143, 12286, 24572, 30715, 49144, 61430, 122860, 245720, 546727, 1093454, 2186908, 2733635, 4373816, 5467270, 10934540, 21869080]

約数ペア:

[(1, 21869080), (2, 10934540), (4, 5467270), (5, 4373816), (8, 2733635), (10, 2186908), (20, 1093454), (40, 546727), (89, 245720), (178, 122860), (356, 61430), (445, 49144), (712, 30715), (890, 24572), (1780, 12286), (3560, 6143)]