21037770

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17981}}^1$

素因数の和:18007

約数の個数: 48

約数和(自身を含む): 58909032

約数和(自身を除く): 37871262

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170, 17981, 35962, 53943, 89905, 107886, 161829, 179810, 233753, 269715, 323658, 467506, 539430, 701259, 809145, 1168765, 1402518, 1618290, 2103777, 2337530, 3506295, 4207554, 7012590, 10518885, 21037770]

約数ペア:

[(1, 21037770), (2, 10518885), (3, 7012590), (5, 4207554), (6, 3506295), (9, 2337530), (10, 2103777), (13, 1618290), (15, 1402518), (18, 1168765), (26, 809145), (30, 701259), (39, 539430), (45, 467506), (65, 323658), (78, 269715), (90, 233753), (117, 179810), (130, 161829), (195, 107886), (234, 89905), (390, 53943), (585, 35962), (1170, 17981)]