21000618132

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1801}}^1\times {\mathrm{74747}}^1$

素因数の和:76568

約数の個数: 48

約数和(自身を含む): 52800791232

約数和(自身を除く): 31800173100

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 1801, 3602, 5403, 7204, 10806, 21612, 23413, 46826, 70239, 74747, 93652, 140478, 149494, 224241, 280956, 298988, 448482, 896964, 971711, 1943422, 2915133, 3886844, 5830266, 11660532, 134619347, 269238694, 403858041, 538477388, 807716082, 1615432164, 1750051511, 3500103022, 5250154533, 7000206044, 10500309066, 21000618132]

約数ペア:

[(1, 21000618132), (2, 10500309066), (3, 7000206044), (4, 5250154533), (6, 3500103022), (12, 1750051511), (13, 1615432164), (26, 807716082), (39, 538477388), (52, 403858041), (78, 269238694), (156, 134619347), (1801, 11660532), (3602, 5830266), (5403, 3886844), (7204, 2915133), (10806, 1943422), (21612, 971711), (23413, 896964), (46826, 448482), (70239, 298988), (74747, 280956), (93652, 224241), (140478, 149494)]