18811920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{761}}^1$

素因数の和:880

約数の個数: 80

約数和(自身を含む): 58960512

約数和(自身を除く): 40148592

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 103, 120, 206, 240, 309, 412, 515, 618, 761, 824, 1030, 1236, 1522, 1545, 1648, 2060, 2283, 2472, 3044, 3090, 3805, 4120, 4566, 4944, 6088, 6180, 7610, 8240, 9132, 11415, 12176, 12360, 15220, 18264, 22830, 24720, 30440, 36528, 45660, 60880, 78383, 91320, 156766, 182640, 235149, 313532, 391915, 470298, 627064, 783830, 940596, 1175745, 1254128, 1567660, 1881192, 2351490, 3135320, 3762384, 4702980, 6270640, 9405960, 18811920]

約数ペア:

[(1, 18811920), (2, 9405960), (3, 6270640), (4, 4702980), (5, 3762384), (6, 3135320), (8, 2351490), (10, 1881192), (12, 1567660), (15, 1254128), (16, 1175745), (20, 940596), (24, 783830), (30, 627064), (40, 470298), (48, 391915), (60, 313532), (80, 235149), (103, 182640), (120, 156766), (206, 91320), (240, 78383), (309, 60880), (412, 45660), (515, 36528), (618, 30440), (761, 24720), (824, 22830), (1030, 18264), (1236, 15220), (1522, 12360), (1545, 12176), (1648, 11415), (2060, 9132), (2283, 8240), (2472, 7610), (3044, 6180), (3090, 6088), (3805, 4944), (4120, 4566)]