221573720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{240841}}^1$

素因数の和:240875

約数の個数: 32

約数和(自身を含む): 520218720

約数和(自身を除く): 298645000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 240841, 481682, 963364, 1204205, 1926728, 2408410, 4816820, 5539343, 9633640, 11078686, 22157372, 27696715, 44314744, 55393430, 110786860, 221573720]

約数ペア:

[(1, 221573720), (2, 110786860), (4, 55393430), (5, 44314744), (8, 27696715), (10, 22157372), (20, 11078686), (23, 9633640), (40, 5539343), (46, 4816820), (92, 2408410), (115, 1926728), (184, 1204205), (230, 963364), (460, 481682), (920, 240841)]