257148120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{541}}^1$

素因数の和:805

約数の個数: 128

約数和(自身を含む): 821845440

約数和(自身を除く): 564697320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 233, 255, 340, 408, 466, 510, 541, 680, 699, 932, 1020, 1082, 1165, 1398, 1623, 1864, 2040, 2164, 2330, 2705, 2796, 3246, 3495, 3961, 4328, 4660, 5410, 5592, 6492, 6990, 7922, 8115, 9197, 9320, 10820, 11883, 12984, 13980, 15844, 16230, 18394, 19805, 21640, 23766, 27591, 27960, 31688, 32460, 36788, 39610, 45985, 47532, 55182, 59415, 64920, 73576, 79220, 91970, 95064, 110364, 118830, 126053, 137955, 158440, 183940, 220728, 237660, 252106, 275910, 367880, 378159, 475320, 504212, 551820, 630265, 756318, 1008424, 1103640, 1260530, 1512636, 1890795, 2142901, 2521060, 3025272, 3781590, 4285802, 5042120, 6428703, 7563180, 8571604, 10714505, 12857406, 15126360, 17143208, 21429010, 25714812, 32143515, 42858020, 51429624, 64287030, 85716040, 128574060, 257148120]

約数ペア:

[(1, 257148120), (2, 128574060), (3, 85716040), (4, 64287030), (5, 51429624), (6, 42858020), (8, 32143515), (10, 25714812), (12, 21429010), (15, 17143208), (17, 15126360), (20, 12857406), (24, 10714505), (30, 8571604), (34, 7563180), (40, 6428703), (51, 5042120), (60, 4285802), (68, 3781590), (85, 3025272), (102, 2521060), (120, 2142901), (136, 1890795), (170, 1512636), (204, 1260530), (233, 1103640), (255, 1008424), (340, 756318), (408, 630265), (466, 551820), (510, 504212), (541, 475320), (680, 378159), (699, 367880), (932, 275910), (1020, 252106), (1082, 237660), (1165, 220728), (1398, 183940), (1623, 158440), (1864, 137955), (2040, 126053), (2164, 118830), (2330, 110364), (2705, 95064), (2796, 91970), (3246, 79220), (3495, 73576), (3961, 64920), (4328, 59415), (4660, 55182), (5410, 47532), (5592, 45985), (6492, 39610), (6990, 36788), (7922, 32460), (8115, 31688), (9197, 27960), (9320, 27591), (10820, 23766), (11883, 21640), (12984, 19805), (13980, 18394), (15844, 16230)]