206723920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1009}}^1$

素因数の和:1232

約数の個数: 80

約数和(自身を含む): 520747920

約数和(自身を除く): 314024000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 197, 208, 260, 394, 520, 788, 985, 1009, 1040, 1576, 1970, 2018, 2561, 3152, 3940, 4036, 5045, 5122, 7880, 8072, 10090, 10244, 12805, 13117, 15760, 16144, 20180, 20488, 25610, 26234, 40360, 40976, 51220, 52468, 65585, 80720, 102440, 104936, 131170, 198773, 204880, 209872, 262340, 397546, 524680, 795092, 993865, 1049360, 1590184, 1987730, 2584049, 3180368, 3975460, 5168098, 7950920, 10336196, 12920245, 15901840, 20672392, 25840490, 41344784, 51680980, 103361960, 206723920]

約数ペア:

[(1, 206723920), (2, 103361960), (4, 51680980), (5, 41344784), (8, 25840490), (10, 20672392), (13, 15901840), (16, 12920245), (20, 10336196), (26, 7950920), (40, 5168098), (52, 3975460), (65, 3180368), (80, 2584049), (104, 1987730), (130, 1590184), (197, 1049360), (208, 993865), (260, 795092), (394, 524680), (520, 397546), (788, 262340), (985, 209872), (1009, 204880), (1040, 198773), (1576, 131170), (1970, 104936), (2018, 102440), (2561, 80720), (3152, 65585), (3940, 52468), (4036, 51220), (5045, 40976), (5122, 40360), (7880, 26234), (8072, 25610), (10090, 20488), (10244, 20180), (12805, 16144), (13117, 15760)]