1991705820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{1381}}^1$

素因数の和:1492

約数の個数: 144

約数和(自身を含む): 6153128352

約数和(自身を除く): 4161422532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 43, 52, 60, 65, 78, 86, 129, 130, 156, 172, 195, 215, 258, 260, 390, 430, 516, 559, 645, 780, 860, 1118, 1290, 1381, 1677, 1849, 2236, 2580, 2762, 2795, 3354, 3698, 4143, 5524, 5547, 5590, 6708, 6905, 7396, 8286, 8385, 9245, 11094, 11180, 13810, 16572, 16770, 17953, 18490, 20715, 22188, 24037, 27620, 27735, 33540, 35906, 36980, 41430, 48074, 53859, 55470, 59383, 71812, 72111, 82860, 89765, 96148, 107718, 110940, 118766, 120185, 144222, 178149, 179530, 215436, 237532, 240370, 269295, 288444, 296915, 356298, 359060, 360555, 480740, 538590, 593830, 712596, 721110, 771979, 890745, 1077180, 1187660, 1442220, 1543958, 1781490, 2315937, 2553469, 3087916, 3562980, 3859895, 4631874, 5106938, 7660407, 7719790, 9263748, 10213876, 11579685, 12767345, 15320814, 15439580, 23159370, 25534690, 30641628, 33195097, 38302035, 46318740, 51069380, 66390194, 76604070, 99585291, 132780388, 153208140, 165975485, 199170582, 331950970, 398341164, 497926455, 663901940, 995852910, 1991705820]

約数ペア:

[(1, 1991705820), (2, 995852910), (3, 663901940), (4, 497926455), (5, 398341164), (6, 331950970), (10, 199170582), (12, 165975485), (13, 153208140), (15, 132780388), (20, 99585291), (26, 76604070), (30, 66390194), (39, 51069380), (43, 46318740), (52, 38302035), (60, 33195097), (65, 30641628), (78, 25534690), (86, 23159370), (129, 15439580), (130, 15320814), (156, 12767345), (172, 11579685), (195, 10213876), (215, 9263748), (258, 7719790), (260, 7660407), (390, 5106938), (430, 4631874), (516, 3859895), (559, 3562980), (645, 3087916), (780, 2553469), (860, 2315937), (1118, 1781490), (1290, 1543958), (1381, 1442220), (1677, 1187660), (1849, 1077180), (2236, 890745), (2580, 771979), (2762, 721110), (2795, 712596), (3354, 593830), (3698, 538590), (4143, 480740), (5524, 360555), (5547, 359060), (5590, 356298), (6708, 296915), (6905, 288444), (7396, 269295), (8286, 240370), (8385, 237532), (9245, 215436), (11094, 179530), (11180, 178149), (13810, 144222), (16572, 120185), (16770, 118766), (17953, 110940), (18490, 107718), (20715, 96148), (22188, 89765), (24037, 82860), (27620, 72111), (27735, 71812), (33540, 59383), (35906, 55470), (36980, 53859), (41430, 48074)]