20321244

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 53813760

約数和(自身を除く): 33492516

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 131, 139, 186, 262, 278, 279, 372, 393, 417, 524, 556, 558, 786, 834, 1116, 1179, 1251, 1572, 1668, 2358, 2502, 4061, 4309, 4716, 5004, 8122, 8618, 12183, 12927, 16244, 17236, 18209, 24366, 25854, 36418, 36549, 38781, 48732, 51708, 54627, 72836, 73098, 77562, 109254, 146196, 155124, 163881, 218508, 327762, 564479, 655524, 1128958, 1693437, 2257916, 3386874, 5080311, 6773748, 10160622, 20321244]

約数ペア:

[(1, 20321244), (2, 10160622), (3, 6773748), (4, 5080311), (6, 3386874), (9, 2257916), (12, 1693437), (18, 1128958), (31, 655524), (36, 564479), (62, 327762), (93, 218508), (124, 163881), (131, 155124), (139, 146196), (186, 109254), (262, 77562), (278, 73098), (279, 72836), (372, 54627), (393, 51708), (417, 48732), (524, 38781), (556, 36549), (558, 36418), (786, 25854), (834, 24366), (1116, 18209), (1179, 17236), (1251, 16244), (1572, 12927), (1668, 12183), (2358, 8618), (2502, 8122), (4061, 5004), (4309, 4716)]