21784266

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{7517}}^1$

素因数の和:7555

約数の個数: 48

約数和(自身を含む): 56294784

約数和(自身を除く): 34510518

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 42, 46, 63, 69, 126, 138, 161, 207, 322, 414, 483, 966, 1449, 2898, 7517, 15034, 22551, 45102, 52619, 67653, 105238, 135306, 157857, 172891, 315714, 345782, 473571, 518673, 947142, 1037346, 1210237, 1556019, 2420474, 3112038, 3630711, 7261422, 10892133, 21784266]

約数ペア:

[(1, 21784266), (2, 10892133), (3, 7261422), (6, 3630711), (7, 3112038), (9, 2420474), (14, 1556019), (18, 1210237), (21, 1037346), (23, 947142), (42, 518673), (46, 473571), (63, 345782), (69, 315714), (126, 172891), (138, 157857), (161, 135306), (207, 105238), (322, 67653), (414, 52619), (483, 45102), (966, 22551), (1449, 15034), (2898, 7517)]