649055240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{971}}^1\times {\mathrm{983}}^1$

素因数の和:1982

約数の個数: 64

約数和(自身を含む): 1549445760

約数和(自身を除く): 900390520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 971, 983, 1942, 1966, 3884, 3932, 4855, 4915, 7768, 7864, 9710, 9830, 16507, 16711, 19420, 19660, 33014, 33422, 38840, 39320, 66028, 66844, 82535, 83555, 132056, 133688, 165070, 167110, 330140, 334220, 660280, 668440, 954493, 1908986, 3817972, 4772465, 7635944, 9544930, 16226381, 19089860, 32452762, 38179720, 64905524, 81131905, 129811048, 162263810, 324527620, 649055240]

約数ペア:

[(1, 649055240), (2, 324527620), (4, 162263810), (5, 129811048), (8, 81131905), (10, 64905524), (17, 38179720), (20, 32452762), (34, 19089860), (40, 16226381), (68, 9544930), (85, 7635944), (136, 4772465), (170, 3817972), (340, 1908986), (680, 954493), (971, 668440), (983, 660280), (1942, 334220), (1966, 330140), (3884, 167110), (3932, 165070), (4855, 133688), (4915, 132056), (7768, 83555), (7864, 82535), (9710, 66844), (9830, 66028), (16507, 39320), (16711, 38840), (19420, 33422), (19660, 33014)]