19996244560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{40063}}^1$

素因数の和:40460

約数の個数: 80

約数和(自身を含む): 49361412096

約数和(自身を除く): 29365167536

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 367, 680, 734, 1360, 1468, 1835, 2936, 3670, 5872, 6239, 7340, 12478, 14680, 24956, 29360, 31195, 40063, 49912, 62390, 80126, 99824, 124780, 160252, 200315, 249560, 320504, 400630, 499120, 641008, 681071, 801260, 1362142, 1602520, 2724284, 3205040, 3405355, 5448568, 6810710, 10897136, 13621420, 14703121, 27242840, 29406242, 54485680, 58812484, 73515605, 117624968, 147031210, 235249936, 249953057, 294062420, 499906114, 588124840, 999812228, 1176249680, 1249765285, 1999624456, 2499530570, 3999248912, 4999061140, 9998122280, 19996244560]

約数ペア:

[(1, 19996244560), (2, 9998122280), (4, 4999061140), (5, 3999248912), (8, 2499530570), (10, 1999624456), (16, 1249765285), (17, 1176249680), (20, 999812228), (34, 588124840), (40, 499906114), (68, 294062420), (80, 249953057), (85, 235249936), (136, 147031210), (170, 117624968), (272, 73515605), (340, 58812484), (367, 54485680), (680, 29406242), (734, 27242840), (1360, 14703121), (1468, 13621420), (1835, 10897136), (2936, 6810710), (3670, 5448568), (5872, 3405355), (6239, 3205040), (7340, 2724284), (12478, 1602520), (14680, 1362142), (24956, 801260), (29360, 681071), (31195, 641008), (40063, 499120), (49912, 400630), (62390, 320504), (80126, 249560), (99824, 200315), (124780, 160252)]