28750520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{11783}}^1$

素因数の和:11855

約数の個数: 32

約数和(自身を含む): 65754720

約数和(自身を除く): 37004200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 11783, 23566, 47132, 58915, 94264, 117830, 235660, 471320, 718763, 1437526, 2875052, 3593815, 5750104, 7187630, 14375260, 28750520]

約数ペア:

[(1, 28750520), (2, 14375260), (4, 7187630), (5, 5750104), (8, 3593815), (10, 2875052), (20, 1437526), (40, 718763), (61, 471320), (122, 235660), (244, 117830), (305, 94264), (488, 58915), (610, 47132), (1220, 23566), (2440, 11783)]