87779720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1249}}^1$

素因数の和:1518

約数の個数: 64

約数和(自身を含む): 226800000

約数和(自身を除く): 139020280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 251, 280, 502, 1004, 1249, 1255, 1757, 2008, 2498, 2510, 3514, 4996, 5020, 6245, 7028, 8743, 8785, 9992, 10040, 12490, 14056, 17486, 17570, 24980, 34972, 35140, 43715, 49960, 69944, 70280, 87430, 174860, 313499, 349720, 626998, 1253996, 1567495, 2194493, 2507992, 3134990, 4388986, 6269980, 8777972, 10972465, 12539960, 17555944, 21944930, 43889860, 87779720]

約数ペア:

[(1, 87779720), (2, 43889860), (4, 21944930), (5, 17555944), (7, 12539960), (8, 10972465), (10, 8777972), (14, 6269980), (20, 4388986), (28, 3134990), (35, 2507992), (40, 2194493), (56, 1567495), (70, 1253996), (140, 626998), (251, 349720), (280, 313499), (502, 174860), (1004, 87430), (1249, 70280), (1255, 69944), (1757, 49960), (2008, 43715), (2498, 35140), (2510, 34972), (3514, 24980), (4996, 17570), (5020, 17486), (6245, 14056), (7028, 12490), (8743, 10040), (8785, 9992)]