1215702740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{541}}^1\times {\mathrm{2293}}^1$

素因数の和:2857

約数の個数: 72

約数和(自身を含む): 2976575112

約数和(自身を除く): 1760872372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 541, 980, 1082, 2164, 2293, 2705, 3787, 4586, 5410, 7574, 9172, 10820, 11465, 15148, 16051, 18935, 22930, 26509, 32102, 37870, 45860, 53018, 64204, 75740, 80255, 106036, 112357, 132545, 160510, 224714, 265090, 321020, 449428, 530180, 561785, 1123570, 1240513, 2247140, 2481026, 4962052, 6202565, 8683591, 12405130, 17367182, 24810260, 34734364, 43417955, 60785137, 86835910, 121570274, 173671820, 243140548, 303925685, 607851370, 1215702740]

約数ペア:

[(1, 1215702740), (2, 607851370), (4, 303925685), (5, 243140548), (7, 173671820), (10, 121570274), (14, 86835910), (20, 60785137), (28, 43417955), (35, 34734364), (49, 24810260), (70, 17367182), (98, 12405130), (140, 8683591), (196, 6202565), (245, 4962052), (490, 2481026), (541, 2247140), (980, 1240513), (1082, 1123570), (2164, 561785), (2293, 530180), (2705, 449428), (3787, 321020), (4586, 265090), (5410, 224714), (7574, 160510), (9172, 132545), (10820, 112357), (11465, 106036), (15148, 80255), (16051, 75740), (18935, 64204), (22930, 53018), (26509, 45860), (32102, 37870)]