54545780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 117089280

約数和(自身を除く): 62543500

約数列:

[1, 2, 4, 5, 10, 20, 109, 131, 191, 218, 262, 382, 436, 524, 545, 655, 764, 955, 1090, 1310, 1910, 2180, 2620, 3820, 14279, 20819, 25021, 28558, 41638, 50042, 57116, 71395, 83276, 100084, 104095, 125105, 142790, 208190, 250210, 285580, 416380, 500420, 2727289, 5454578, 10909156, 13636445, 27272890, 54545780]

約数ペア:

[(1, 54545780), (2, 27272890), (4, 13636445), (5, 10909156), (10, 5454578), (20, 2727289), (109, 500420), (131, 416380), (191, 285580), (218, 250210), (262, 208190), (382, 142790), (436, 125105), (524, 104095), (545, 100084), (655, 83276), (764, 71395), (955, 57116), (1090, 50042), (1310, 41638), (1910, 28558), (2180, 25021), (2620, 20819), (3820, 14279)]