21520008

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^1\times {\mathrm{15731}}^1$

素因数の和:15762

約数の個数: 48

約数和(自身を含む): 61354800

約数和(自身を除く): 39834792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 57, 72, 76, 114, 152, 171, 228, 342, 456, 684, 1368, 15731, 31462, 47193, 62924, 94386, 125848, 141579, 188772, 283158, 298889, 377544, 566316, 597778, 896667, 1132632, 1195556, 1793334, 2391112, 2690001, 3586668, 5380002, 7173336, 10760004, 21520008]

約数ペア:

[(1, 21520008), (2, 10760004), (3, 7173336), (4, 5380002), (6, 3586668), (8, 2690001), (9, 2391112), (12, 1793334), (18, 1195556), (19, 1132632), (24, 896667), (36, 597778), (38, 566316), (57, 377544), (72, 298889), (76, 283158), (114, 188772), (152, 141579), (171, 125848), (228, 94386), (342, 62924), (456, 47193), (684, 31462), (1368, 15731)]