77980140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:532

約数の個数: 144

約数和(自身を含む): 272563200

約数和(自身を除く): 194583060

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 199, 210, 252, 311, 315, 398, 420, 597, 622, 630, 796, 933, 995, 1194, 1244, 1260, 1393, 1555, 1791, 1866, 1990, 2177, 2388, 2786, 2799, 2985, 3110, 3582, 3732, 3980, 4179, 4354, 4665, 5572, 5598, 5970, 6220, 6531, 6965, 7164, 8358, 8708, 8955, 9330, 10885, 11196, 11940, 12537, 13062, 13930, 13995, 16716, 17910, 18660, 19593, 20895, 21770, 25074, 26124, 27860, 27990, 32655, 35820, 39186, 41790, 43540, 50148, 55980, 61889, 62685, 65310, 78372, 83580, 97965, 123778, 125370, 130620, 185667, 195930, 247556, 250740, 309445, 371334, 391860, 433223, 557001, 618890, 742668, 866446, 928335, 1114002, 1237780, 1299669, 1732892, 1856670, 2166115, 2228004, 2599338, 2785005, 3713340, 3899007, 4332230, 5198676, 5570010, 6498345, 7798014, 8664460, 11140020, 12996690, 15596028, 19495035, 25993380, 38990070, 77980140]

約数ペア:

[(1, 77980140), (2, 38990070), (3, 25993380), (4, 19495035), (5, 15596028), (6, 12996690), (7, 11140020), (9, 8664460), (10, 7798014), (12, 6498345), (14, 5570010), (15, 5198676), (18, 4332230), (20, 3899007), (21, 3713340), (28, 2785005), (30, 2599338), (35, 2228004), (36, 2166115), (42, 1856670), (45, 1732892), (60, 1299669), (63, 1237780), (70, 1114002), (84, 928335), (90, 866446), (105, 742668), (126, 618890), (140, 557001), (180, 433223), (199, 391860), (210, 371334), (252, 309445), (311, 250740), (315, 247556), (398, 195930), (420, 185667), (597, 130620), (622, 125370), (630, 123778), (796, 97965), (933, 83580), (995, 78372), (1194, 65310), (1244, 62685), (1260, 61889), (1393, 55980), (1555, 50148), (1791, 43540), (1866, 41790), (1990, 39186), (2177, 35820), (2388, 32655), (2786, 27990), (2799, 27860), (2985, 26124), (3110, 25074), (3582, 21770), (3732, 20895), (3980, 19593), (4179, 18660), (4354, 17910), (4665, 16716), (5572, 13995), (5598, 13930), (5970, 13062), (6220, 12537), (6531, 11940), (6965, 11196), (7164, 10885), (8358, 9330), (8708, 8955)]