2809040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:136

約数の個数: 80

約数和(自身を含む): 7322448

約数和(自身を除く): 4513408

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 73, 74, 80, 104, 130, 146, 148, 185, 208, 260, 292, 296, 365, 370, 481, 520, 584, 592, 730, 740, 949, 962, 1040, 1168, 1460, 1480, 1898, 1924, 2405, 2701, 2920, 2960, 3796, 3848, 4745, 4810, 5402, 5840, 7592, 7696, 9490, 9620, 10804, 13505, 15184, 18980, 19240, 21608, 27010, 35113, 37960, 38480, 43216, 54020, 70226, 75920, 108040, 140452, 175565, 216080, 280904, 351130, 561808, 702260, 1404520, 2809040]

約数ペア:

[(1, 2809040), (2, 1404520), (4, 702260), (5, 561808), (8, 351130), (10, 280904), (13, 216080), (16, 175565), (20, 140452), (26, 108040), (37, 75920), (40, 70226), (52, 54020), (65, 43216), (73, 38480), (74, 37960), (80, 35113), (104, 27010), (130, 21608), (146, 19240), (148, 18980), (185, 15184), (208, 13505), (260, 10804), (292, 9620), (296, 9490), (365, 7696), (370, 7592), (481, 5840), (520, 5402), (584, 4810), (592, 4745), (730, 3848), (740, 3796), (949, 2960), (962, 2920), (1040, 2701), (1168, 2405), (1460, 1924), (1480, 1898)]