81168640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{9059}}^1$

素因数の和:9087

約数の個数: 72

約数和(自身を含む): 222223680

約数和(自身を除く): 141055040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 4480, 8960, 9059, 18118, 36236, 45295, 63413, 72472, 90590, 126826, 144944, 181180, 253652, 289888, 317065, 362360, 507304, 579776, 634130, 724720, 1014608, 1159552, 1268260, 1449440, 2029216, 2319104, 2536520, 2898880, 4058432, 5073040, 5797760, 8116864, 10146080, 11595520, 16233728, 20292160, 40584320, 81168640]

約数ペア:

[(1, 81168640), (2, 40584320), (4, 20292160), (5, 16233728), (7, 11595520), (8, 10146080), (10, 8116864), (14, 5797760), (16, 5073040), (20, 4058432), (28, 2898880), (32, 2536520), (35, 2319104), (40, 2029216), (56, 1449440), (64, 1268260), (70, 1159552), (80, 1014608), (112, 724720), (128, 634130), (140, 579776), (160, 507304), (224, 362360), (256, 317065), (280, 289888), (320, 253652), (448, 181180), (560, 144944), (640, 126826), (896, 90590), (1120, 72472), (1280, 63413), (1792, 45295), (2240, 36236), (4480, 18118), (8960, 9059)]