491583820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:384

約数の個数: 144

約数和(自身を含む): 1298626560

約数和(自身を除く): 807042740

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 79, 91, 130, 140, 158, 169, 182, 260, 263, 316, 338, 364, 395, 455, 526, 553, 676, 790, 845, 910, 1027, 1052, 1106, 1183, 1315, 1580, 1690, 1820, 1841, 2054, 2212, 2366, 2630, 2765, 3380, 3419, 3682, 4108, 4732, 5135, 5260, 5530, 5915, 6838, 7189, 7364, 9205, 10270, 11060, 11830, 13351, 13676, 14378, 17095, 18410, 20540, 20777, 23660, 23933, 26702, 28756, 34190, 35945, 36820, 41554, 44447, 47866, 53404, 66755, 68380, 71890, 83108, 88894, 93457, 95732, 103885, 119665, 133510, 143780, 145439, 177788, 186914, 207770, 222235, 239330, 267020, 270101, 290878, 311129, 373828, 415540, 444470, 467285, 478660, 540202, 581756, 622258, 727195, 888940, 934570, 1080404, 1244516, 1350505, 1454390, 1555645, 1869140, 1890707, 2701010, 2908780, 3111290, 3511313, 3781414, 5402020, 6222580, 7022626, 7562828, 9453535, 14045252, 17556565, 18907070, 24579191, 35113130, 37814140, 49158382, 70226260, 98316764, 122895955, 245791910, 491583820]

約数ペア:

[(1, 491583820), (2, 245791910), (4, 122895955), (5, 98316764), (7, 70226260), (10, 49158382), (13, 37814140), (14, 35113130), (20, 24579191), (26, 18907070), (28, 17556565), (35, 14045252), (52, 9453535), (65, 7562828), (70, 7022626), (79, 6222580), (91, 5402020), (130, 3781414), (140, 3511313), (158, 3111290), (169, 2908780), (182, 2701010), (260, 1890707), (263, 1869140), (316, 1555645), (338, 1454390), (364, 1350505), (395, 1244516), (455, 1080404), (526, 934570), (553, 888940), (676, 727195), (790, 622258), (845, 581756), (910, 540202), (1027, 478660), (1052, 467285), (1106, 444470), (1183, 415540), (1315, 373828), (1580, 311129), (1690, 290878), (1820, 270101), (1841, 267020), (2054, 239330), (2212, 222235), (2366, 207770), (2630, 186914), (2765, 177788), (3380, 145439), (3419, 143780), (3682, 133510), (4108, 119665), (4732, 103885), (5135, 95732), (5260, 93457), (5530, 88894), (5915, 83108), (6838, 71890), (7189, 68380), (7364, 66755), (9205, 53404), (10270, 47866), (11060, 44447), (11830, 41554), (13351, 36820), (13676, 35945), (14378, 34190), (17095, 28756), (18410, 26702), (20540, 23933), (20777, 23660)]