28407100

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{4001}}^1$

素因数の和:4086

約数の個数: 36

約数和(自身を含む): 62527248

約数和(自身を除く): 34120148

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 4001, 7100, 8002, 16004, 20005, 40010, 80020, 100025, 200050, 284071, 400100, 568142, 1136284, 1420355, 2840710, 5681420, 7101775, 14203550, 28407100]

約数ペア:

[(1, 28407100), (2, 14203550), (4, 7101775), (5, 5681420), (10, 2840710), (20, 1420355), (25, 1136284), (50, 568142), (71, 400100), (100, 284071), (142, 200050), (284, 100025), (355, 80020), (710, 40010), (1420, 20005), (1775, 16004), (3550, 8002), (4001, 7100)]