20715975

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{1879}}^1$

素因数の和:1909

約数の個数: 54

約数和(自身を含む): 43185480

約数和(自身を除く): 22469505

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 105, 147, 175, 225, 245, 315, 441, 525, 735, 1225, 1575, 1879, 2205, 3675, 5637, 9395, 11025, 13153, 16911, 28185, 39459, 46975, 65765, 84555, 92071, 118377, 140925, 197295, 276213, 328825, 422775, 460355, 591885, 828639, 986475, 1381065, 2301775, 2959425, 4143195, 6905325, 20715975]

約数ペア:

[(1, 20715975), (3, 6905325), (5, 4143195), (7, 2959425), (9, 2301775), (15, 1381065), (21, 986475), (25, 828639), (35, 591885), (45, 460355), (49, 422775), (63, 328825), (75, 276213), (105, 197295), (147, 140925), (175, 118377), (225, 92071), (245, 84555), (315, 65765), (441, 46975), (525, 39459), (735, 28185), (1225, 16911), (1575, 13153), (1879, 11025), (2205, 9395), (3675, 5637)]