19506780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{353}}^1$

素因数の和:675

約数の個数: 72

約数和(自身を含む): 59531472

約数和(自身を除く): 40024692

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 307, 353, 614, 706, 921, 1059, 1228, 1412, 1535, 1765, 1842, 2118, 2763, 3070, 3177, 3530, 3684, 4236, 4605, 5295, 5526, 6140, 6354, 7060, 9210, 10590, 11052, 12708, 13815, 15885, 18420, 21180, 27630, 31770, 55260, 63540, 108371, 216742, 325113, 433484, 541855, 650226, 975339, 1083710, 1300452, 1625565, 1950678, 2167420, 3251130, 3901356, 4876695, 6502260, 9753390, 19506780]

約数ペア:

[(1, 19506780), (2, 9753390), (3, 6502260), (4, 4876695), (5, 3901356), (6, 3251130), (9, 2167420), (10, 1950678), (12, 1625565), (15, 1300452), (18, 1083710), (20, 975339), (30, 650226), (36, 541855), (45, 433484), (60, 325113), (90, 216742), (180, 108371), (307, 63540), (353, 55260), (614, 31770), (706, 27630), (921, 21180), (1059, 18420), (1228, 15885), (1412, 13815), (1535, 12708), (1765, 11052), (1842, 10590), (2118, 9210), (2763, 7060), (3070, 6354), (3177, 6140), (3530, 5526), (3684, 5295), (4236, 4605)]