21471040

素因数分解:

$2^6\times 5^1\times {\mathrm{229}}^1\times {\mathrm{293}}^1$

素因数の和:539

約数の個数: 56

約数和(自身を含む): 51526440

約数和(自身を除く): 30055400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 229, 293, 320, 458, 586, 916, 1145, 1172, 1465, 1832, 2290, 2344, 2930, 3664, 4580, 4688, 5860, 7328, 9160, 9376, 11720, 14656, 18320, 18752, 23440, 36640, 46880, 67097, 73280, 93760, 134194, 268388, 335485, 536776, 670970, 1073552, 1341940, 2147104, 2683880, 4294208, 5367760, 10735520, 21471040]

約数ペア:

[(1, 21471040), (2, 10735520), (4, 5367760), (5, 4294208), (8, 2683880), (10, 2147104), (16, 1341940), (20, 1073552), (32, 670970), (40, 536776), (64, 335485), (80, 268388), (160, 134194), (229, 93760), (293, 73280), (320, 67097), (458, 46880), (586, 36640), (916, 23440), (1145, 18752), (1172, 18320), (1465, 14656), (1832, 11720), (2290, 9376), (2344, 9160), (2930, 7328), (3664, 5860), (4580, 4688)]