21757862

素因数分解:

$2^1\times 7^4\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:250

約数の個数: 40

約数和(自身を含む): 39931056

約数和(自身を除く): 18173194

約数列:

[1, 2, 7, 14, 23, 46, 49, 98, 161, 197, 322, 343, 394, 686, 1127, 1379, 2254, 2401, 2758, 4531, 4802, 7889, 9062, 9653, 15778, 19306, 31717, 55223, 63434, 67571, 110446, 135142, 222019, 444038, 472997, 945994, 1554133, 3108266, 10878931, 21757862]

約数ペア:

[(1, 21757862), (2, 10878931), (7, 3108266), (14, 1554133), (23, 945994), (46, 472997), (49, 444038), (98, 222019), (161, 135142), (197, 110446), (322, 67571), (343, 63434), (394, 55223), (686, 31717), (1127, 19306), (1379, 15778), (2254, 9653), (2401, 9062), (2758, 7889), (4531, 4802)]