21702590

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3407}}^1$

素因数の和:3441

約数の個数: 48

約数和(自身を含む): 48952512

約数和(自身を除く): 27249922

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, 3407, 6370, 6814, 17035, 23849, 34070, 44291, 47698, 88582, 119245, 166943, 221455, 238490, 310037, 333886, 442910, 620074, 834715, 1550185, 1669430, 2170259, 3100370, 4340518, 10851295, 21702590]

約数ペア:

[(1, 21702590), (2, 10851295), (5, 4340518), (7, 3100370), (10, 2170259), (13, 1669430), (14, 1550185), (26, 834715), (35, 620074), (49, 442910), (65, 333886), (70, 310037), (91, 238490), (98, 221455), (130, 166943), (182, 119245), (245, 88582), (455, 47698), (490, 44291), (637, 34070), (910, 23849), (1274, 17035), (3185, 6814), (3407, 6370)]