18905440

素因数分解:

$2^5\times 5^1\times {\mathrm{173}}^1\times {\mathrm{683}}^1$

素因数の和:871

約数の個数: 48

約数和(自身を含む): 44988048

約数和(自身を除く): 26082608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 173, 346, 683, 692, 865, 1366, 1384, 1730, 2732, 2768, 3415, 3460, 5464, 5536, 6830, 6920, 10928, 13660, 13840, 21856, 27320, 27680, 54640, 109280, 118159, 236318, 472636, 590795, 945272, 1181590, 1890544, 2363180, 3781088, 4726360, 9452720, 18905440]

約数ペア:

[(1, 18905440), (2, 9452720), (4, 4726360), (5, 3781088), (8, 2363180), (10, 1890544), (16, 1181590), (20, 945272), (32, 590795), (40, 472636), (80, 236318), (160, 118159), (173, 109280), (346, 54640), (683, 27680), (692, 27320), (865, 21856), (1366, 13840), (1384, 13660), (1730, 10928), (2732, 6920), (2768, 6830), (3415, 5536), (3460, 5464)]