21383025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 38711808

約数和(自身を除く): 17328783

約数列:

[1, 3, 5, 15, 17, 25, 31, 51, 75, 85, 93, 155, 255, 425, 465, 527, 541, 775, 1275, 1581, 1623, 2325, 2635, 2705, 7905, 8115, 9197, 13175, 13525, 16771, 27591, 39525, 40575, 45985, 50313, 83855, 137955, 229925, 251565, 285107, 419275, 689775, 855321, 1257825, 1425535, 4276605, 7127675, 21383025]

約数ペア:

[(1, 21383025), (3, 7127675), (5, 4276605), (15, 1425535), (17, 1257825), (25, 855321), (31, 689775), (51, 419275), (75, 285107), (85, 251565), (93, 229925), (155, 137955), (255, 83855), (425, 50313), (465, 45985), (527, 40575), (541, 39525), (775, 27591), (1275, 16771), (1581, 13525), (1623, 13175), (2325, 9197), (2635, 8115), (2705, 7905)]