16620747

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:140

約数の個数: 64

約数和(自身を含む): 28740096

約数和(自身を除く): 12119349

約数列:

[1, 3, 11, 13, 17, 33, 39, 43, 51, 53, 129, 143, 159, 187, 221, 429, 473, 559, 561, 583, 663, 689, 731, 901, 1419, 1677, 1749, 2067, 2193, 2279, 2431, 2703, 6149, 6837, 7293, 7579, 8041, 9503, 9911, 11713, 18447, 22737, 24123, 25069, 28509, 29627, 29733, 35139, 38743, 75207, 88881, 104533, 116229, 128843, 313599, 325897, 386529, 426173, 503659, 977691, 1278519, 1510977, 5540249, 16620747]

約数ペア:

[(1, 16620747), (3, 5540249), (11, 1510977), (13, 1278519), (17, 977691), (33, 503659), (39, 426173), (43, 386529), (51, 325897), (53, 313599), (129, 128843), (143, 116229), (159, 104533), (187, 88881), (221, 75207), (429, 38743), (473, 35139), (559, 29733), (561, 29627), (583, 28509), (663, 25069), (689, 24123), (731, 22737), (901, 18447), (1419, 11713), (1677, 9911), (1749, 9503), (2067, 8041), (2193, 7579), (2279, 7293), (2431, 6837), (2703, 6149)]