20921818672

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{76918451}}^1$

素因数の和:76918476

約数の個数: 20

約数和(自身を含む): 42920496216

約数和(自身を除く): 21998677544

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 76918451, 153836902, 307673804, 615347608, 1230695216, 1307613667, 2615227334, 5230454668, 10460909336, 20921818672]

約数ペア:

[(1, 20921818672), (2, 10460909336), (4, 5230454668), (8, 2615227334), (16, 1307613667), (17, 1230695216), (34, 615347608), (68, 307673804), (136, 153836902), (272, 76918451)]