261221976

素因数分解:

$2^3\times 3^3\times {\mathrm{997}}^1\times {\mathrm{1213}}^1$

素因数の和:2225

約数の個数: 64

約数和(自身を含む): 726943200

約数和(自身を除く): 465721224

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 997, 1213, 1994, 2426, 2991, 3639, 3988, 4852, 5982, 7278, 7976, 8973, 9704, 10917, 11964, 14556, 17946, 21834, 23928, 26919, 29112, 32751, 35892, 43668, 53838, 65502, 71784, 87336, 107676, 131004, 215352, 262008, 1209361, 2418722, 3628083, 4837444, 7256166, 9674888, 10884249, 14512332, 21768498, 29024664, 32652747, 43536996, 65305494, 87073992, 130610988, 261221976]

約数ペア:

[(1, 261221976), (2, 130610988), (3, 87073992), (4, 65305494), (6, 43536996), (8, 32652747), (9, 29024664), (12, 21768498), (18, 14512332), (24, 10884249), (27, 9674888), (36, 7256166), (54, 4837444), (72, 3628083), (108, 2418722), (216, 1209361), (997, 262008), (1213, 215352), (1994, 131004), (2426, 107676), (2991, 87336), (3639, 71784), (3988, 65502), (4852, 53838), (5982, 43668), (7278, 35892), (7976, 32751), (8973, 29112), (9704, 26919), (10917, 23928), (11964, 21834), (14556, 17946)]