131251520

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:280

約数の個数: 112

約数和(自身を含む): 328306176

約数和(自身を除く): 197054656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 101, 124, 131, 155, 160, 202, 248, 262, 310, 320, 404, 496, 505, 524, 620, 655, 808, 992, 1010, 1048, 1240, 1310, 1616, 1984, 2020, 2096, 2480, 2620, 3131, 3232, 4040, 4061, 4192, 4960, 5240, 6262, 6464, 8080, 8122, 8384, 9920, 10480, 12524, 13231, 15655, 16160, 16244, 20305, 20960, 25048, 26462, 31310, 32320, 32488, 40610, 41920, 50096, 52924, 62620, 64976, 66155, 81220, 100192, 105848, 125240, 129952, 132310, 162440, 200384, 211696, 250480, 259904, 264620, 324880, 410161, 423392, 500960, 529240, 649760, 820322, 846784, 1001920, 1058480, 1299520, 1640644, 2050805, 2116960, 3281288, 4101610, 4233920, 6562576, 8203220, 13125152, 16406440, 26250304, 32812880, 65625760, 131251520]

約数ペア:

[(1, 131251520), (2, 65625760), (4, 32812880), (5, 26250304), (8, 16406440), (10, 13125152), (16, 8203220), (20, 6562576), (31, 4233920), (32, 4101610), (40, 3281288), (62, 2116960), (64, 2050805), (80, 1640644), (101, 1299520), (124, 1058480), (131, 1001920), (155, 846784), (160, 820322), (202, 649760), (248, 529240), (262, 500960), (310, 423392), (320, 410161), (404, 324880), (496, 264620), (505, 259904), (524, 250480), (620, 211696), (655, 200384), (808, 162440), (992, 132310), (1010, 129952), (1048, 125240), (1240, 105848), (1310, 100192), (1616, 81220), (1984, 66155), (2020, 64976), (2096, 62620), (2480, 52924), (2620, 50096), (3131, 41920), (3232, 40610), (4040, 32488), (4061, 32320), (4192, 31310), (4960, 26462), (5240, 25048), (6262, 20960), (6464, 20305), (8080, 16244), (8122, 16160), (8384, 15655), (9920, 13231), (10480, 12524)]