21389535

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20082465

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 93, 95, 135, 155, 171, 269, 279, 285, 465, 513, 589, 807, 837, 855, 1345, 1395, 1767, 2421, 2565, 2945, 4035, 4185, 5111, 5301, 7263, 8339, 8835, 12105, 15333, 15903, 25017, 25555, 26505, 36315, 41695, 45999, 75051, 76665, 79515, 125085, 137997, 158441, 225153, 229995, 375255, 475323, 689985, 792205, 1125765, 1425969, 2376615, 4277907, 7129845, 21389535]

約数ペア:

[(1, 21389535), (3, 7129845), (5, 4277907), (9, 2376615), (15, 1425969), (19, 1125765), (27, 792205), (31, 689985), (45, 475323), (57, 375255), (93, 229995), (95, 225153), (135, 158441), (155, 137997), (171, 125085), (269, 79515), (279, 76665), (285, 75051), (465, 45999), (513, 41695), (589, 36315), (807, 26505), (837, 25555), (855, 25017), (1345, 15903), (1395, 15333), (1767, 12105), (2421, 8835), (2565, 8339), (2945, 7263), (4035, 5301), (4185, 5111)]