209280440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{509}}^1\times {\mathrm{541}}^1$

素因数の和:1080

約数の個数: 64

約数和(自身を含む): 497556000

約数和(自身を除く): 288275560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 509, 541, 760, 1018, 1082, 2036, 2164, 2545, 2705, 4072, 4328, 5090, 5410, 9671, 10180, 10279, 10820, 19342, 20360, 20558, 21640, 38684, 41116, 48355, 51395, 77368, 82232, 96710, 102790, 193420, 205580, 275369, 386840, 411160, 550738, 1101476, 1376845, 2202952, 2753690, 5232011, 5507380, 10464022, 11014760, 20928044, 26160055, 41856088, 52320110, 104640220, 209280440]

約数ペア:

[(1, 209280440), (2, 104640220), (4, 52320110), (5, 41856088), (8, 26160055), (10, 20928044), (19, 11014760), (20, 10464022), (38, 5507380), (40, 5232011), (76, 2753690), (95, 2202952), (152, 1376845), (190, 1101476), (380, 550738), (509, 411160), (541, 386840), (760, 275369), (1018, 205580), (1082, 193420), (2036, 102790), (2164, 96710), (2545, 82232), (2705, 77368), (4072, 51395), (4328, 48355), (5090, 41116), (5410, 38684), (9671, 21640), (10180, 20558), (10279, 20360), (10820, 19342)]