81716320

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{1489}}^1$

素因数の和:1525

約数の個数: 96

約数和(自身を含む): 225288000

約数和(自身を除く): 143571680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1120, 1372, 1489, 1568, 1715, 1960, 2744, 2978, 3430, 3920, 5488, 5956, 6860, 7445, 7840, 10423, 10976, 11912, 13720, 14890, 20846, 23824, 27440, 29780, 41692, 47648, 52115, 54880, 59560, 72961, 83384, 104230, 119120, 145922, 166768, 208460, 238240, 291844, 333536, 364805, 416920, 510727, 583688, 729610, 833840, 1021454, 1167376, 1459220, 1667680, 2042908, 2334752, 2553635, 2918440, 4085816, 5107270, 5836880, 8171632, 10214540, 11673760, 16343264, 20429080, 40858160, 81716320]

約数ペア:

[(1, 81716320), (2, 40858160), (4, 20429080), (5, 16343264), (7, 11673760), (8, 10214540), (10, 8171632), (14, 5836880), (16, 5107270), (20, 4085816), (28, 2918440), (32, 2553635), (35, 2334752), (40, 2042908), (49, 1667680), (56, 1459220), (70, 1167376), (80, 1021454), (98, 833840), (112, 729610), (140, 583688), (160, 510727), (196, 416920), (224, 364805), (245, 333536), (280, 291844), (343, 238240), (392, 208460), (490, 166768), (560, 145922), (686, 119120), (784, 104230), (980, 83384), (1120, 72961), (1372, 59560), (1489, 54880), (1568, 52115), (1715, 47648), (1960, 41692), (2744, 29780), (2978, 27440), (3430, 23824), (3920, 20846), (5488, 14890), (5956, 13720), (6860, 11912), (7445, 10976), (7840, 10423)]