21971439

素因数分解:

$3^3\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1151}}^1$

素因数の和:1268

約数の個数: 32

約数和(自身を含む): 37601280

約数和(自身を除く): 15629841

約数列:

[1, 3, 7, 9, 21, 27, 63, 101, 189, 303, 707, 909, 1151, 2121, 2727, 3453, 6363, 8057, 10359, 19089, 24171, 31077, 72513, 116251, 217539, 348753, 813757, 1046259, 2441271, 3138777, 7323813, 21971439]

約数ペア:

[(1, 21971439), (3, 7323813), (7, 3138777), (9, 2441271), (21, 1046259), (27, 813757), (63, 348753), (101, 217539), (189, 116251), (303, 72513), (707, 31077), (909, 24171), (1151, 19089), (2121, 10359), (2727, 8057), (3453, 6363)]