21161970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3221}}^1$

素因数の和:3307

約数の個数: 48

約数和(自身を含む): 55792152

約数和(自身を除く): 34630182

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 73, 90, 146, 219, 365, 438, 657, 730, 1095, 1314, 2190, 3221, 3285, 6442, 6570, 9663, 16105, 19326, 28989, 32210, 48315, 57978, 96630, 144945, 235133, 289890, 470266, 705399, 1175665, 1410798, 2116197, 2351330, 3526995, 4232394, 7053990, 10580985, 21161970]

約数ペア:

[(1, 21161970), (2, 10580985), (3, 7053990), (5, 4232394), (6, 3526995), (9, 2351330), (10, 2116197), (15, 1410798), (18, 1175665), (30, 705399), (45, 470266), (73, 289890), (90, 235133), (146, 144945), (219, 96630), (365, 57978), (438, 48315), (657, 32210), (730, 28989), (1095, 19326), (1314, 16105), (2190, 9663), (3221, 6570), (3285, 6442)]