21809808

素因数分解:

$2^4\times 3^2\times {\mathrm{311}}^1\times {\mathrm{487}}^1$

素因数の和:812

約数の個数: 60

約数和(自身を含む): 61359168

約数和(自身を除く): 39549360

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 311, 487, 622, 933, 974, 1244, 1461, 1866, 1948, 2488, 2799, 2922, 3732, 3896, 4383, 4976, 5598, 5844, 7464, 7792, 8766, 11196, 11688, 14928, 17532, 22392, 23376, 35064, 44784, 70128, 151457, 302914, 454371, 605828, 908742, 1211656, 1363113, 1817484, 2423312, 2726226, 3634968, 5452452, 7269936, 10904904, 21809808]

約数ペア:

[(1, 21809808), (2, 10904904), (3, 7269936), (4, 5452452), (6, 3634968), (8, 2726226), (9, 2423312), (12, 1817484), (16, 1363113), (18, 1211656), (24, 908742), (36, 605828), (48, 454371), (72, 302914), (144, 151457), (311, 70128), (487, 44784), (622, 35064), (933, 23376), (974, 22392), (1244, 17532), (1461, 14928), (1866, 11688), (1948, 11196), (2488, 8766), (2799, 7792), (2922, 7464), (3732, 5844), (3896, 5598), (4383, 4976)]