21209976

素因数分解:

$2^3\times 3^2\times {\mathrm{223}}^1\times {\mathrm{1321}}^1$

素因数の和:1556

約数の個数: 48

約数和(自身を含む): 57744960

約数和(自身を除く): 36534984

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 223, 446, 669, 892, 1321, 1338, 1784, 2007, 2642, 2676, 3963, 4014, 5284, 5352, 7926, 8028, 10568, 11889, 15852, 16056, 23778, 31704, 47556, 95112, 294583, 589166, 883749, 1178332, 1767498, 2356664, 2651247, 3534996, 5302494, 7069992, 10604988, 21209976]

約数ペア:

[(1, 21209976), (2, 10604988), (3, 7069992), (4, 5302494), (6, 3534996), (8, 2651247), (9, 2356664), (12, 1767498), (18, 1178332), (24, 883749), (36, 589166), (72, 294583), (223, 95112), (446, 47556), (669, 31704), (892, 23778), (1321, 16056), (1338, 15852), (1784, 11889), (2007, 10568), (2642, 8028), (2676, 7926), (3963, 5352), (4014, 5284)]