21505696

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:317

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 22523744

約数列:

[1, 2, 4, 8, 16, 32, 47, 79, 94, 158, 181, 188, 316, 362, 376, 632, 724, 752, 1264, 1448, 1504, 2528, 2896, 3713, 5792, 7426, 8507, 14299, 14852, 17014, 28598, 29704, 34028, 57196, 59408, 68056, 114392, 118816, 136112, 228784, 272224, 457568, 672053, 1344106, 2688212, 5376424, 10752848, 21505696]

約数ペア:

[(1, 21505696), (2, 10752848), (4, 5376424), (8, 2688212), (16, 1344106), (32, 672053), (47, 457568), (79, 272224), (94, 228784), (158, 136112), (181, 118816), (188, 114392), (316, 68056), (362, 59408), (376, 57196), (632, 34028), (724, 29704), (752, 28598), (1264, 17014), (1448, 14852), (1504, 14299), (2528, 8507), (2896, 7426), (3713, 5792)]