20781617745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{983}}^1\times {\mathrm{10597}}^1$

素因数の和:11614

約数の個数: 64

約数和(自身を含む): 40045178880

約数和(自身を除く): 19263561135

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 983, 1995, 2949, 4915, 6881, 10597, 14745, 18677, 20643, 31791, 34405, 52985, 56031, 74179, 93385, 103215, 130739, 158955, 201343, 222537, 280155, 370895, 392217, 604029, 653695, 1006715, 1112685, 1409401, 1961085, 3020145, 4228203, 7047005, 10416851, 21141015, 31250553, 52084255, 72917957, 156252765, 197920169, 218753871, 364589785, 593760507, 989600845, 1093769355, 1385441183, 2968802535, 4156323549, 6927205915, 20781617745]

約数ペア:

[(1, 20781617745), (3, 6927205915), (5, 4156323549), (7, 2968802535), (15, 1385441183), (19, 1093769355), (21, 989600845), (35, 593760507), (57, 364589785), (95, 218753871), (105, 197920169), (133, 156252765), (285, 72917957), (399, 52084255), (665, 31250553), (983, 21141015), (1995, 10416851), (2949, 7047005), (4915, 4228203), (6881, 3020145), (10597, 1961085), (14745, 1409401), (18677, 1112685), (20643, 1006715), (31791, 653695), (34405, 604029), (52985, 392217), (56031, 370895), (74179, 280155), (93385, 222537), (103215, 201343), (130739, 158955)]