28156360

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{3889}}^1$

素因数の和:4081

約数の個数: 32

約数和(自身を含む): 63718200

約数和(自身を除く): 35561840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 3889, 7240, 7778, 15556, 19445, 31112, 38890, 77780, 155560, 703909, 1407818, 2815636, 3519545, 5631272, 7039090, 14078180, 28156360]

約数ペア:

[(1, 28156360), (2, 14078180), (4, 7039090), (5, 5631272), (8, 3519545), (10, 2815636), (20, 1407818), (40, 703909), (181, 155560), (362, 77780), (724, 38890), (905, 31112), (1448, 19445), (1810, 15556), (3620, 7778), (3889, 7240)]