20408360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3169}}^1$

素因数の和:3210

約数の個数: 64

約数和(自身を含む): 54777600

約数和(自身を除く): 34369240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3169, 3220, 6338, 6440, 12676, 15845, 22183, 25352, 31690, 44366, 63380, 72887, 88732, 110915, 126760, 145774, 177464, 221830, 291548, 364435, 443660, 510209, 583096, 728870, 887320, 1020418, 1457740, 2040836, 2551045, 2915480, 4081672, 5102090, 10204180, 20408360]

約数ペア:

[(1, 20408360), (2, 10204180), (4, 5102090), (5, 4081672), (7, 2915480), (8, 2551045), (10, 2040836), (14, 1457740), (20, 1020418), (23, 887320), (28, 728870), (35, 583096), (40, 510209), (46, 443660), (56, 364435), (70, 291548), (92, 221830), (115, 177464), (140, 145774), (161, 126760), (184, 110915), (230, 88732), (280, 72887), (322, 63380), (460, 44366), (644, 31690), (805, 25352), (920, 22183), (1288, 15845), (1610, 12676), (3169, 6440), (3220, 6338)]