18742768

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{977}}^1$

素因数の和:1105

約数の個数: 40

約数和(自身を含む): 40019760

約数和(自身を除く): 21276992

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 109, 176, 218, 436, 872, 977, 1199, 1744, 1954, 2398, 3908, 4796, 7816, 9592, 10747, 15632, 19184, 21494, 42988, 85976, 106493, 171952, 212986, 425972, 851944, 1171423, 1703888, 2342846, 4685692, 9371384, 18742768]

約数ペア:

[(1, 18742768), (2, 9371384), (4, 4685692), (8, 2342846), (11, 1703888), (16, 1171423), (22, 851944), (44, 425972), (88, 212986), (109, 171952), (176, 106493), (218, 85976), (436, 42988), (872, 21494), (977, 19184), (1199, 15632), (1744, 10747), (1954, 9592), (2398, 7816), (3908, 4796)]