21266245

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 34933248

約数和(自身を除く): 13667003

約数列:

[1, 5, 7, 11, 13, 35, 49, 55, 65, 77, 91, 143, 245, 385, 455, 539, 607, 637, 715, 1001, 2695, 3035, 3185, 4249, 5005, 6677, 7007, 7891, 21245, 29743, 33385, 35035, 39455, 46739, 55237, 86801, 148715, 233695, 276185, 327173, 386659, 434005, 607607, 1635865, 1933295, 3038035, 4253249, 21266245]

約数ペア:

[(1, 21266245), (5, 4253249), (7, 3038035), (11, 1933295), (13, 1635865), (35, 607607), (49, 434005), (55, 386659), (65, 327173), (77, 276185), (91, 233695), (143, 148715), (245, 86801), (385, 55237), (455, 46739), (539, 39455), (607, 35035), (637, 33385), (715, 29743), (1001, 21245), (2695, 7891), (3035, 7007), (3185, 6677), (4249, 5005)]