81823980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194819}}^1$

素因数の和:194838

約数の個数: 48

約数和(自身を含む): 261838080

約数和(自身を除く): 180014100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194819, 389638, 584457, 779276, 974095, 1168914, 1363733, 1948190, 2337828, 2727466, 2922285, 3896380, 4091199, 5454932, 5844570, 6818665, 8182398, 11689140, 13637330, 16364796, 20455995, 27274660, 40911990, 81823980]

約数ペア:

[(1, 81823980), (2, 40911990), (3, 27274660), (4, 20455995), (5, 16364796), (6, 13637330), (7, 11689140), (10, 8182398), (12, 6818665), (14, 5844570), (15, 5454932), (20, 4091199), (21, 3896380), (28, 2922285), (30, 2727466), (35, 2337828), (42, 1948190), (60, 1363733), (70, 1168914), (84, 974095), (105, 779276), (140, 584457), (210, 389638), (420, 194819)]