1721811

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:100

約数の個数: 48

約数和(自身を含む): 3102624

約数和(自身を除く): 1380813

約数列:

[1, 3, 7, 13, 17, 21, 39, 49, 51, 53, 91, 119, 147, 159, 221, 273, 357, 371, 637, 663, 689, 833, 901, 1113, 1547, 1911, 2067, 2499, 2597, 2703, 4641, 4823, 6307, 7791, 10829, 11713, 14469, 18921, 32487, 33761, 35139, 44149, 81991, 101283, 132447, 245973, 573937, 1721811]

約数ペア:

[(1, 1721811), (3, 573937), (7, 245973), (13, 132447), (17, 101283), (21, 81991), (39, 44149), (49, 35139), (51, 33761), (53, 32487), (91, 18921), (119, 14469), (147, 11713), (159, 10829), (221, 7791), (273, 6307), (357, 4823), (371, 4641), (637, 2703), (663, 2597), (689, 2499), (833, 2067), (901, 1911), (1113, 1547)]