15991020

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{9871}}^1$

素因数の和:9892

約数の個数: 60

約数和(自身を含む): 50169504

約数和(自身を除く): 34178484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 9871, 19742, 29613, 39484, 49355, 59226, 88839, 98710, 118452, 148065, 177678, 197420, 266517, 296130, 355356, 444195, 533034, 592260, 799551, 888390, 1066068, 1332585, 1599102, 1776780, 2665170, 3198204, 3997755, 5330340, 7995510, 15991020]

約数ペア:

[(1, 15991020), (2, 7995510), (3, 5330340), (4, 3997755), (5, 3198204), (6, 2665170), (9, 1776780), (10, 1599102), (12, 1332585), (15, 1066068), (18, 888390), (20, 799551), (27, 592260), (30, 533034), (36, 444195), (45, 355356), (54, 296130), (60, 266517), (81, 197420), (90, 177678), (108, 148065), (135, 118452), (162, 98710), (180, 88839), (270, 59226), (324, 49355), (405, 39484), (540, 29613), (810, 19742), (1620, 9871)]