20989560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10289}}^1$

素因数の和:10320

約数の個数: 64

約数和(自身を含む): 66679200

約数和(自身を除く): 45689640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10289, 20578, 30867, 41156, 51445, 61734, 82312, 102890, 123468, 154335, 174913, 205780, 246936, 308670, 349826, 411560, 524739, 617340, 699652, 874565, 1049478, 1234680, 1399304, 1749130, 2098956, 2623695, 3498260, 4197912, 5247390, 6996520, 10494780, 20989560]

約数ペア:

[(1, 20989560), (2, 10494780), (3, 6996520), (4, 5247390), (5, 4197912), (6, 3498260), (8, 2623695), (10, 2098956), (12, 1749130), (15, 1399304), (17, 1234680), (20, 1049478), (24, 874565), (30, 699652), (34, 617340), (40, 524739), (51, 411560), (60, 349826), (68, 308670), (85, 246936), (102, 205780), (120, 174913), (136, 154335), (170, 123468), (204, 102890), (255, 82312), (340, 61734), (408, 51445), (510, 41156), (680, 30867), (1020, 20578), (2040, 10289)]