8478140

素因数分解:

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

素因数の和:542

約数の個数: 48

約数和(自身を含む): 19686240

約数和(自身を除く): 11208100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 433, 445, 866, 890, 979, 1732, 1780, 1958, 2165, 3916, 4330, 4763, 4895, 8660, 9526, 9790, 19052, 19580, 23815, 38537, 47630, 77074, 95260, 154148, 192685, 385370, 423907, 770740, 847814, 1695628, 2119535, 4239070, 8478140]

約数ペア:

[(1, 8478140), (2, 4239070), (4, 2119535), (5, 1695628), (10, 847814), (11, 770740), (20, 423907), (22, 385370), (44, 192685), (55, 154148), (89, 95260), (110, 77074), (178, 47630), (220, 38537), (356, 23815), (433, 19580), (445, 19052), (866, 9790), (890, 9526), (979, 8660), (1732, 4895), (1780, 4763), (1958, 4330), (2165, 3916)]