256910220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203897}}^1$

素因数の和:203919

約数の個数: 72

約数和(自身を含む): 890626464

約数和(自身を除く): 633716244

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 203897, 407794, 611691, 815588, 1019485, 1223382, 1427279, 1835073, 2038970, 2446764, 2854558, 3058455, 3670146, 4077940, 4281837, 5709116, 6116910, 7136395, 7340292, 8563674, 9175365, 12233820, 12845511, 14272790, 17127348, 18350730, 21409185, 25691022, 28545580, 36701460, 42818370, 51382044, 64227555, 85636740, 128455110, 256910220]

約数ペア:

[(1, 256910220), (2, 128455110), (3, 85636740), (4, 64227555), (5, 51382044), (6, 42818370), (7, 36701460), (9, 28545580), (10, 25691022), (12, 21409185), (14, 18350730), (15, 17127348), (18, 14272790), (20, 12845511), (21, 12233820), (28, 9175365), (30, 8563674), (35, 7340292), (36, 7136395), (42, 6116910), (45, 5709116), (60, 4281837), (63, 4077940), (70, 3670146), (84, 3058455), (90, 2854558), (105, 2446764), (126, 2038970), (140, 1835073), (180, 1427279), (210, 1223382), (252, 1019485), (315, 815588), (420, 611691), (630, 407794), (1260, 203897)]