81112720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3391}}^1$

素因数の和:3440

約数の個数: 80

約数和(自身を含む): 211986432

約数和(自身を除く): 130873712

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1495, 1840, 2392, 2990, 3391, 4784, 5980, 6782, 11960, 13564, 16955, 23920, 27128, 33910, 44083, 54256, 67820, 77993, 88166, 135640, 155986, 176332, 220415, 271280, 311972, 352664, 389965, 440830, 623944, 705328, 779930, 881660, 1013909, 1247888, 1559860, 1763320, 2027818, 3119720, 3526640, 4055636, 5069545, 6239440, 8111272, 10139090, 16222544, 20278180, 40556360, 81112720]

約数ペア:

[(1, 81112720), (2, 40556360), (4, 20278180), (5, 16222544), (8, 10139090), (10, 8111272), (13, 6239440), (16, 5069545), (20, 4055636), (23, 3526640), (26, 3119720), (40, 2027818), (46, 1763320), (52, 1559860), (65, 1247888), (80, 1013909), (92, 881660), (104, 779930), (115, 705328), (130, 623944), (184, 440830), (208, 389965), (230, 352664), (260, 311972), (299, 271280), (368, 220415), (460, 176332), (520, 155986), (598, 135640), (920, 88166), (1040, 77993), (1196, 67820), (1495, 54256), (1840, 44083), (2392, 33910), (2990, 27128), (3391, 23920), (4784, 16955), (5980, 13564), (6782, 11960)]