221451520

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10177}}^1$

素因数の和:10215

約数の個数: 72

約数和(自身を含む): 561703464

約数和(自身を除く): 340251944

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1360, 2176, 2720, 4352, 5440, 10177, 10880, 20354, 21760, 40708, 50885, 81416, 101770, 162832, 173009, 203540, 325664, 346018, 407080, 651328, 692036, 814160, 865045, 1302656, 1384072, 1628320, 1730090, 2605312, 2768144, 3256640, 3460180, 5536288, 6513280, 6920360, 11072576, 13026560, 13840720, 22145152, 27681440, 44290304, 55362880, 110725760, 221451520]

約数ペア:

[(1, 221451520), (2, 110725760), (4, 55362880), (5, 44290304), (8, 27681440), (10, 22145152), (16, 13840720), (17, 13026560), (20, 11072576), (32, 6920360), (34, 6513280), (40, 5536288), (64, 3460180), (68, 3256640), (80, 2768144), (85, 2605312), (128, 1730090), (136, 1628320), (160, 1384072), (170, 1302656), (256, 865045), (272, 814160), (320, 692036), (340, 651328), (544, 407080), (640, 346018), (680, 325664), (1088, 203540), (1280, 173009), (1360, 162832), (2176, 101770), (2720, 81416), (4352, 50885), (5440, 40708), (10177, 21760), (10880, 20354)]