28206180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{449}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 85995000

約数和(自身を除く): 57788820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 349, 449, 698, 898, 1047, 1347, 1396, 1745, 1796, 2094, 2245, 2694, 3141, 3490, 4041, 4188, 4490, 5235, 5388, 6282, 6735, 6980, 8082, 8980, 10470, 12564, 13470, 15705, 16164, 20205, 20940, 26940, 31410, 40410, 62820, 80820, 156701, 313402, 470103, 626804, 783505, 940206, 1410309, 1567010, 1880412, 2350515, 2820618, 3134020, 4701030, 5641236, 7051545, 9402060, 14103090, 28206180]

約数ペア:

[(1, 28206180), (2, 14103090), (3, 9402060), (4, 7051545), (5, 5641236), (6, 4701030), (9, 3134020), (10, 2820618), (12, 2350515), (15, 1880412), (18, 1567010), (20, 1410309), (30, 940206), (36, 783505), (45, 626804), (60, 470103), (90, 313402), (180, 156701), (349, 80820), (449, 62820), (698, 40410), (898, 31410), (1047, 26940), (1347, 20940), (1396, 20205), (1745, 16164), (1796, 15705), (2094, 13470), (2245, 12564), (2694, 10470), (3141, 8980), (3490, 8082), (4041, 6980), (4188, 6735), (4490, 6282), (5235, 5388)]