278533760

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:290

約数の個数: 128

約数和(自身を含む): 699148800

約数和(自身を除く): 420615040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 101, 124, 128, 139, 155, 160, 202, 248, 278, 310, 320, 404, 496, 505, 556, 620, 640, 695, 808, 992, 1010, 1112, 1240, 1390, 1616, 1984, 2020, 2224, 2480, 2780, 3131, 3232, 3968, 4040, 4309, 4448, 4960, 5560, 6262, 6464, 8080, 8618, 8896, 9920, 11120, 12524, 12928, 14039, 15655, 16160, 17236, 17792, 19840, 21545, 22240, 25048, 28078, 31310, 32320, 34472, 43090, 44480, 50096, 56156, 62620, 64640, 68944, 70195, 86180, 88960, 100192, 112312, 125240, 137888, 140390, 172360, 200384, 224624, 250480, 275776, 280780, 344720, 400768, 435209, 449248, 500960, 551552, 561560, 689440, 870418, 898496, 1001920, 1123120, 1378880, 1740836, 1796992, 2003840, 2176045, 2246240, 2757760, 3481672, 4352090, 4492480, 6963344, 8704180, 8984960, 13926688, 17408360, 27853376, 34816720, 55706752, 69633440, 139266880, 278533760]

約数ペア:

[(1, 278533760), (2, 139266880), (4, 69633440), (5, 55706752), (8, 34816720), (10, 27853376), (16, 17408360), (20, 13926688), (31, 8984960), (32, 8704180), (40, 6963344), (62, 4492480), (64, 4352090), (80, 3481672), (101, 2757760), (124, 2246240), (128, 2176045), (139, 2003840), (155, 1796992), (160, 1740836), (202, 1378880), (248, 1123120), (278, 1001920), (310, 898496), (320, 870418), (404, 689440), (496, 561560), (505, 551552), (556, 500960), (620, 449248), (640, 435209), (695, 400768), (808, 344720), (992, 280780), (1010, 275776), (1112, 250480), (1240, 224624), (1390, 200384), (1616, 172360), (1984, 140390), (2020, 137888), (2224, 125240), (2480, 112312), (2780, 100192), (3131, 88960), (3232, 86180), (3968, 70195), (4040, 68944), (4309, 64640), (4448, 62620), (4960, 56156), (5560, 50096), (6262, 44480), (6464, 43090), (8080, 34472), (8618, 32320), (8896, 31310), (9920, 28078), (11120, 25048), (12524, 22240), (12928, 21545), (14039, 19840), (15655, 17792), (16160, 17236)]