21694260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 72624384

約数和(自身を除く): 50930124

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 49, 60, 70, 84, 94, 98, 105, 140, 141, 147, 157, 188, 196, 210, 235, 245, 282, 294, 314, 329, 420, 470, 471, 490, 564, 588, 628, 658, 705, 735, 785, 940, 942, 980, 987, 1099, 1316, 1410, 1470, 1570, 1645, 1884, 1974, 2198, 2303, 2355, 2820, 2940, 3140, 3290, 3297, 3948, 4396, 4606, 4710, 4935, 5495, 6580, 6594, 6909, 7379, 7693, 9212, 9420, 9870, 10990, 11515, 13188, 13818, 14758, 15386, 16485, 19740, 21980, 22137, 23030, 23079, 27636, 29516, 30772, 32970, 34545, 36895, 38465, 44274, 46060, 46158, 51653, 65940, 69090, 73790, 76930, 88548, 92316, 103306, 110685, 115395, 138180, 147580, 153860, 154959, 206612, 221370, 230790, 258265, 309918, 361571, 442740, 461580, 516530, 619836, 723142, 774795, 1033060, 1084713, 1446284, 1549590, 1807855, 2169426, 3099180, 3615710, 4338852, 5423565, 7231420, 10847130, 21694260]

約数ペア:

[(1, 21694260), (2, 10847130), (3, 7231420), (4, 5423565), (5, 4338852), (6, 3615710), (7, 3099180), (10, 2169426), (12, 1807855), (14, 1549590), (15, 1446284), (20, 1084713), (21, 1033060), (28, 774795), (30, 723142), (35, 619836), (42, 516530), (47, 461580), (49, 442740), (60, 361571), (70, 309918), (84, 258265), (94, 230790), (98, 221370), (105, 206612), (140, 154959), (141, 153860), (147, 147580), (157, 138180), (188, 115395), (196, 110685), (210, 103306), (235, 92316), (245, 88548), (282, 76930), (294, 73790), (314, 69090), (329, 65940), (420, 51653), (470, 46158), (471, 46060), (490, 44274), (564, 38465), (588, 36895), (628, 34545), (658, 32970), (705, 30772), (735, 29516), (785, 27636), (940, 23079), (942, 23030), (980, 22137), (987, 21980), (1099, 19740), (1316, 16485), (1410, 15386), (1470, 14758), (1570, 13818), (1645, 13188), (1884, 11515), (1974, 10990), (2198, 9870), (2303, 9420), (2355, 9212), (2820, 7693), (2940, 7379), (3140, 6909), (3290, 6594), (3297, 6580), (3948, 5495), (4396, 4935), (4606, 4710)]