40720365

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{503}}^1$

素因数の和:778

約数の個数: 48

約数和(自身を含む): 81139968

約数和(自身を除く): 40419603

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 257, 315, 503, 771, 1285, 1509, 1799, 2313, 2515, 3521, 3855, 4527, 5397, 7545, 8995, 10563, 11565, 16191, 17605, 22635, 26985, 31689, 52815, 80955, 129271, 158445, 387813, 646355, 904897, 1163439, 1939065, 2714691, 4524485, 5817195, 8144073, 13573455, 40720365]

約数ペア:

[(1, 40720365), (3, 13573455), (5, 8144073), (7, 5817195), (9, 4524485), (15, 2714691), (21, 1939065), (35, 1163439), (45, 904897), (63, 646355), (105, 387813), (257, 158445), (315, 129271), (503, 80955), (771, 52815), (1285, 31689), (1509, 26985), (1799, 22635), (2313, 17605), (2515, 16191), (3521, 11565), (3855, 10563), (4527, 8995), (5397, 7545)]