161626840

素因数分解:

$2^3\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{3889}}^1$

素因数の和:4939

約数の個数: 32

約数和(自身を含む): 364104000

約数和(自身を除く): 202477160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1039, 2078, 3889, 4156, 5195, 7778, 8312, 10390, 15556, 19445, 20780, 31112, 38890, 41560, 77780, 155560, 4040671, 8081342, 16162684, 20203355, 32325368, 40406710, 80813420, 161626840]

約数ペア:

[(1, 161626840), (2, 80813420), (4, 40406710), (5, 32325368), (8, 20203355), (10, 16162684), (20, 8081342), (40, 4040671), (1039, 155560), (2078, 77780), (3889, 41560), (4156, 38890), (5195, 31112), (7778, 20780), (8312, 19445), (10390, 15556)]