16956280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{433}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 42184800

約数和(自身を除く): 25228520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 433, 440, 445, 712, 866, 890, 979, 1732, 1780, 1958, 2165, 3464, 3560, 3916, 4330, 4763, 4895, 7832, 8660, 9526, 9790, 17320, 19052, 19580, 23815, 38104, 38537, 39160, 47630, 77074, 95260, 154148, 190520, 192685, 308296, 385370, 423907, 770740, 847814, 1541480, 1695628, 2119535, 3391256, 4239070, 8478140, 16956280]

約数ペア:

[(1, 16956280), (2, 8478140), (4, 4239070), (5, 3391256), (8, 2119535), (10, 1695628), (11, 1541480), (20, 847814), (22, 770740), (40, 423907), (44, 385370), (55, 308296), (88, 192685), (89, 190520), (110, 154148), (178, 95260), (220, 77074), (356, 47630), (433, 39160), (440, 38537), (445, 38104), (712, 23815), (866, 19580), (890, 19052), (979, 17320), (1732, 9790), (1780, 9526), (1958, 8660), (2165, 7832), (3464, 4895), (3560, 4763), (3916, 4330)]