122720320

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:276

約数の個数: 112

約数和(自身を含む): 307238400

約数和(自身を除く): 184518080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 89, 124, 139, 155, 160, 178, 248, 278, 310, 320, 356, 445, 496, 556, 620, 695, 712, 890, 992, 1112, 1240, 1390, 1424, 1780, 1984, 2224, 2480, 2759, 2780, 2848, 3560, 4309, 4448, 4960, 5518, 5560, 5696, 7120, 8618, 8896, 9920, 11036, 11120, 12371, 13795, 14240, 17236, 21545, 22072, 22240, 24742, 27590, 28480, 34472, 43090, 44144, 44480, 49484, 55180, 61855, 68944, 86180, 88288, 98968, 110360, 123710, 137888, 172360, 176576, 197936, 220720, 247420, 275776, 344720, 383501, 395872, 441440, 494840, 689440, 767002, 791744, 882880, 989680, 1378880, 1534004, 1917505, 1979360, 3068008, 3835010, 3958720, 6136016, 7670020, 12272032, 15340040, 24544064, 30680080, 61360160, 122720320]

約数ペア:

[(1, 122720320), (2, 61360160), (4, 30680080), (5, 24544064), (8, 15340040), (10, 12272032), (16, 7670020), (20, 6136016), (31, 3958720), (32, 3835010), (40, 3068008), (62, 1979360), (64, 1917505), (80, 1534004), (89, 1378880), (124, 989680), (139, 882880), (155, 791744), (160, 767002), (178, 689440), (248, 494840), (278, 441440), (310, 395872), (320, 383501), (356, 344720), (445, 275776), (496, 247420), (556, 220720), (620, 197936), (695, 176576), (712, 172360), (890, 137888), (992, 123710), (1112, 110360), (1240, 98968), (1390, 88288), (1424, 86180), (1780, 68944), (1984, 61855), (2224, 55180), (2480, 49484), (2759, 44480), (2780, 44144), (2848, 43090), (3560, 34472), (4309, 28480), (4448, 27590), (4960, 24742), (5518, 22240), (5560, 22072), (5696, 21545), (7120, 17236), (8618, 14240), (8896, 13795), (9920, 12371), (11036, 11120)]