21019376

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3541}}^1$

素因数の和:3609

約数の個数: 40

約数和(自身を含む): 47434464

約数和(自身を除く): 26415088

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 106, 112, 212, 371, 424, 742, 848, 1484, 2968, 3541, 5936, 7082, 14164, 24787, 28328, 49574, 56656, 99148, 187673, 198296, 375346, 396592, 750692, 1313711, 1501384, 2627422, 3002768, 5254844, 10509688, 21019376]

約数ペア:

[(1, 21019376), (2, 10509688), (4, 5254844), (7, 3002768), (8, 2627422), (14, 1501384), (16, 1313711), (28, 750692), (53, 396592), (56, 375346), (106, 198296), (112, 187673), (212, 99148), (371, 56656), (424, 49574), (742, 28328), (848, 24787), (1484, 14164), (2968, 7082), (3541, 5936)]