211271720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{1913}}^1$

素因数の和:2186

約数の個数: 64

約数和(自身を含む): 520914240

約数和(自身を除く): 309642520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 251, 440, 502, 1004, 1255, 1913, 2008, 2510, 2761, 3826, 5020, 5522, 7652, 9565, 10040, 11044, 13805, 15304, 19130, 21043, 22088, 27610, 38260, 42086, 55220, 76520, 84172, 105215, 110440, 168344, 210430, 420860, 480163, 841720, 960326, 1920652, 2400815, 3841304, 4801630, 5281793, 9603260, 10563586, 19206520, 21127172, 26408965, 42254344, 52817930, 105635860, 211271720]

約数ペア:

[(1, 211271720), (2, 105635860), (4, 52817930), (5, 42254344), (8, 26408965), (10, 21127172), (11, 19206520), (20, 10563586), (22, 9603260), (40, 5281793), (44, 4801630), (55, 3841304), (88, 2400815), (110, 1920652), (220, 960326), (251, 841720), (440, 480163), (502, 420860), (1004, 210430), (1255, 168344), (1913, 110440), (2008, 105215), (2510, 84172), (2761, 76520), (3826, 55220), (5020, 42086), (5522, 38260), (7652, 27610), (9565, 22088), (10040, 21043), (11044, 19130), (13805, 15304)]