21191944

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 40875840

約数和(自身を除く): 19683896

約数列:

[1, 2, 4, 8, 53, 106, 151, 212, 302, 331, 424, 604, 662, 1208, 1324, 2648, 8003, 16006, 17543, 32012, 35086, 49981, 64024, 70172, 99962, 140344, 199924, 399848, 2648993, 5297986, 10595972, 21191944]

約数ペア:

[(1, 21191944), (2, 10595972), (4, 5297986), (8, 2648993), (53, 399848), (106, 199924), (151, 140344), (212, 99962), (302, 70172), (331, 64024), (424, 49981), (604, 35086), (662, 32012), (1208, 17543), (1324, 16006), (2648, 8003)]