217371520

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19979}}^1$

素因数の和:20015

約数の個数: 64

約数和(自身を含む): 550249200

約数和(自身を除く): 332877680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 2176, 2720, 5440, 10880, 19979, 39958, 79916, 99895, 159832, 199790, 319664, 339643, 399580, 639328, 679286, 799160, 1278656, 1358572, 1598320, 1698215, 2557312, 2717144, 3196640, 3396430, 5434288, 6393280, 6792860, 10868576, 12786560, 13585720, 21737152, 27171440, 43474304, 54342880, 108685760, 217371520]

約数ペア:

[(1, 217371520), (2, 108685760), (4, 54342880), (5, 43474304), (8, 27171440), (10, 21737152), (16, 13585720), (17, 12786560), (20, 10868576), (32, 6792860), (34, 6393280), (40, 5434288), (64, 3396430), (68, 3196640), (80, 2717144), (85, 2557312), (128, 1698215), (136, 1598320), (160, 1358572), (170, 1278656), (272, 799160), (320, 679286), (340, 639328), (544, 399580), (640, 339643), (680, 319664), (1088, 199790), (1360, 159832), (2176, 99895), (2720, 79916), (5440, 39958), (10880, 19979)]