18919850

素因数分解:

$2^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 36747648

約数和(自身を除く): 17827798

約数列:

[1, 2, 5, 10, 25, 47, 50, 83, 94, 97, 166, 194, 235, 415, 470, 485, 830, 970, 1175, 2075, 2350, 2425, 3901, 4150, 4559, 4850, 7802, 8051, 9118, 16102, 19505, 22795, 39010, 40255, 45590, 80510, 97525, 113975, 195050, 201275, 227950, 378397, 402550, 756794, 1891985, 3783970, 9459925, 18919850]

約数ペア:

[(1, 18919850), (2, 9459925), (5, 3783970), (10, 1891985), (25, 756794), (47, 402550), (50, 378397), (83, 227950), (94, 201275), (97, 195050), (166, 113975), (194, 97525), (235, 80510), (415, 45590), (470, 40255), (485, 39010), (830, 22795), (970, 19505), (1175, 16102), (2075, 9118), (2350, 8051), (2425, 7802), (3901, 4850), (4150, 4559)]