18781020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1013}}^1$

素因数の和:1131

約数の個数: 72

約数和(自身を含む): 57578976

約数和(自身を除く): 38797956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1013, 1030, 1236, 1545, 1854, 2026, 2060, 3039, 3090, 3708, 4052, 4635, 5065, 6078, 6180, 9117, 9270, 10130, 12156, 15195, 18234, 18540, 20260, 30390, 36468, 45585, 60780, 91170, 104339, 182340, 208678, 313017, 417356, 521695, 626034, 939051, 1043390, 1252068, 1565085, 1878102, 2086780, 3130170, 3756204, 4695255, 6260340, 9390510, 18781020]

約数ペア:

[(1, 18781020), (2, 9390510), (3, 6260340), (4, 4695255), (5, 3756204), (6, 3130170), (9, 2086780), (10, 1878102), (12, 1565085), (15, 1252068), (18, 1043390), (20, 939051), (30, 626034), (36, 521695), (45, 417356), (60, 313017), (90, 208678), (103, 182340), (180, 104339), (206, 91170), (309, 60780), (412, 45585), (515, 36468), (618, 30390), (927, 20260), (1013, 18540), (1030, 18234), (1236, 15195), (1545, 12156), (1854, 10130), (2026, 9270), (2060, 9117), (3039, 6180), (3090, 6078), (3708, 5065), (4052, 4635)]