21070305

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5261}}^1$

素因数の和:5361

約数の個数: 24

約数和(自身を含む): 36939240

約数和(自身を除く): 15868935

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005, 5261, 15783, 26305, 47349, 78915, 236745, 468229, 1404687, 2341145, 4214061, 7023435, 21070305]

約数ペア:

[(1, 21070305), (3, 7023435), (5, 4214061), (9, 2341145), (15, 1404687), (45, 468229), (89, 236745), (267, 78915), (445, 47349), (801, 26305), (1335, 15783), (4005, 5261)]