21781260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{121007}}^1$

素因数の和:121022

約数の個数: 36

約数和(自身を含む): 66070368

約数和(自身を除く): 44289108

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 121007, 242014, 363021, 484028, 605035, 726042, 1089063, 1210070, 1452084, 1815105, 2178126, 2420140, 3630210, 4356252, 5445315, 7260420, 10890630, 21781260]

約数ペア:

[(1, 21781260), (2, 10890630), (3, 7260420), (4, 5445315), (5, 4356252), (6, 3630210), (9, 2420140), (10, 2178126), (12, 1815105), (15, 1452084), (18, 1210070), (20, 1089063), (30, 726042), (36, 605035), (45, 484028), (60, 363021), (90, 242014), (180, 121007)]