19252780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 42293664

約数和(自身を除く): 23040884

約数列:

[1, 2, 4, 5, 10, 20, 41, 53, 82, 106, 164, 205, 212, 265, 410, 443, 530, 820, 886, 1060, 1772, 2173, 2215, 4346, 4430, 8692, 8860, 10865, 18163, 21730, 23479, 36326, 43460, 46958, 72652, 90815, 93916, 117395, 181630, 234790, 363260, 469580, 962639, 1925278, 3850556, 4813195, 9626390, 19252780]

約数ペア:

[(1, 19252780), (2, 9626390), (4, 4813195), (5, 3850556), (10, 1925278), (20, 962639), (41, 469580), (53, 363260), (82, 234790), (106, 181630), (164, 117395), (205, 93916), (212, 90815), (265, 72652), (410, 46958), (443, 43460), (530, 36326), (820, 23479), (886, 21730), (1060, 18163), (1772, 10865), (2173, 8860), (2215, 8692), (4346, 4430)]