28697540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{443}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 62657280

約数和(自身を除く): 33959740

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 410, 443, 790, 820, 886, 1580, 1772, 2215, 3239, 4430, 6478, 8860, 12956, 16195, 18163, 32390, 34997, 36326, 64780, 69994, 72652, 90815, 139988, 174985, 181630, 349970, 363260, 699940, 1434877, 2869754, 5739508, 7174385, 14348770, 28697540]

約数ペア:

[(1, 28697540), (2, 14348770), (4, 7174385), (5, 5739508), (10, 2869754), (20, 1434877), (41, 699940), (79, 363260), (82, 349970), (158, 181630), (164, 174985), (205, 139988), (316, 90815), (395, 72652), (410, 69994), (443, 64780), (790, 36326), (820, 34997), (886, 32390), (1580, 18163), (1772, 16195), (2215, 12956), (3239, 8860), (4430, 6478)]