17938960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{367}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 45997056

約数和(自身を除く): 28058096

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 47, 52, 65, 80, 94, 104, 130, 188, 208, 235, 260, 367, 376, 470, 520, 611, 734, 752, 940, 1040, 1222, 1468, 1835, 1880, 2444, 2936, 3055, 3670, 3760, 4771, 4888, 5872, 6110, 7340, 9542, 9776, 12220, 14680, 17249, 19084, 23855, 24440, 29360, 34498, 38168, 47710, 48880, 68996, 76336, 86245, 95420, 137992, 172490, 190840, 224237, 275984, 344980, 381680, 448474, 689960, 896948, 1121185, 1379920, 1793896, 2242370, 3587792, 4484740, 8969480, 17938960]

約数ペア:

[(1, 17938960), (2, 8969480), (4, 4484740), (5, 3587792), (8, 2242370), (10, 1793896), (13, 1379920), (16, 1121185), (20, 896948), (26, 689960), (40, 448474), (47, 381680), (52, 344980), (65, 275984), (80, 224237), (94, 190840), (104, 172490), (130, 137992), (188, 95420), (208, 86245), (235, 76336), (260, 68996), (367, 48880), (376, 47710), (470, 38168), (520, 34498), (611, 29360), (734, 24440), (752, 23855), (940, 19084), (1040, 17249), (1222, 14680), (1468, 12220), (1835, 9776), (1880, 9542), (2444, 7340), (2936, 6110), (3055, 5872), (3670, 4888), (3760, 4771)]