21294910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3343}}^1$

素因数の和:3377

約数の個数: 48

約数和(自身を含む): 48033216

約数和(自身を除く): 26738306

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3343, 6370, 6686, 16715, 23401, 33430, 43459, 46802, 86918, 117005, 163807, 217295, 234010, 304213, 327614, 434590, 608426, 819035, 1521065, 1638070, 2129491, 3042130, 4258982, 10647455, 21294910]

約数ペア:

[(1, 21294910), (2, 10647455), (5, 4258982), (7, 3042130), (10, 2129491), (13, 1638070), (14, 1521065), (26, 819035), (35, 608426), (49, 434590), (65, 327614), (70, 304213), (91, 234010), (98, 217295), (130, 163807), (182, 117005), (245, 86918), (455, 46802), (490, 43459), (637, 33430), (910, 23401), (1274, 16715), (3185, 6686), (3343, 6370)]