21399928

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12799}}^1$

素因数の和:12835

約数の個数: 32

約数和(自身を含む): 46080000

約数和(自身を除く): 24680072

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12799, 25598, 51196, 102392, 140789, 243181, 281578, 486362, 563156, 972724, 1126312, 1945448, 2674991, 5349982, 10699964, 21399928]

約数ペア:

[(1, 21399928), (2, 10699964), (4, 5349982), (8, 2674991), (11, 1945448), (19, 1126312), (22, 972724), (38, 563156), (44, 486362), (76, 281578), (88, 243181), (152, 140789), (209, 102392), (418, 51196), (836, 25598), (1672, 12799)]