28399720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{619}}^1$

素因数の和:698

約数の個数: 64

約数和(自身を含む): 67852800

約数和(自身を除く): 39453080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 619, 620, 740, 1147, 1238, 1240, 1480, 2294, 2476, 3095, 4588, 4952, 5735, 6190, 9176, 11470, 12380, 19189, 22903, 22940, 24760, 38378, 45806, 45880, 76756, 91612, 95945, 114515, 153512, 183224, 191890, 229030, 383780, 458060, 709993, 767560, 916120, 1419986, 2839972, 3549965, 5679944, 7099930, 14199860, 28399720]

約数ペア:

[(1, 28399720), (2, 14199860), (4, 7099930), (5, 5679944), (8, 3549965), (10, 2839972), (20, 1419986), (31, 916120), (37, 767560), (40, 709993), (62, 458060), (74, 383780), (124, 229030), (148, 191890), (155, 183224), (185, 153512), (248, 114515), (296, 95945), (310, 91612), (370, 76756), (619, 45880), (620, 45806), (740, 38378), (1147, 24760), (1238, 22940), (1240, 22903), (1480, 19189), (2294, 12380), (2476, 11470), (3095, 9176), (4588, 6190), (4952, 5735)]