21301560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:210

約数の個数: 192

約数和(自身を含む): 80870400

約数和(自身を除く): 59568840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 79, 84, 90, 105, 107, 120, 126, 140, 158, 168, 180, 210, 214, 237, 252, 280, 315, 316, 321, 360, 395, 420, 428, 474, 504, 535, 553, 630, 632, 642, 711, 749, 790, 840, 856, 948, 963, 1070, 1106, 1185, 1260, 1284, 1422, 1498, 1580, 1605, 1659, 1896, 1926, 2140, 2212, 2247, 2370, 2520, 2568, 2765, 2844, 2996, 3160, 3210, 3318, 3555, 3745, 3852, 4280, 4424, 4494, 4740, 4815, 4977, 5530, 5688, 5992, 6420, 6636, 6741, 7110, 7490, 7704, 8295, 8453, 8988, 9480, 9630, 9954, 11060, 11235, 12840, 13272, 13482, 14220, 14980, 16590, 16906, 17976, 19260, 19908, 22120, 22470, 24885, 25359, 26964, 28440, 29960, 33180, 33705, 33812, 38520, 39816, 42265, 44940, 49770, 50718, 53928, 59171, 66360, 67410, 67624, 76077, 84530, 89880, 99540, 101436, 118342, 126795, 134820, 152154, 169060, 177513, 199080, 202872, 236684, 253590, 269640, 295855, 304308, 338120, 355026, 380385, 473368, 507180, 532539, 591710, 608616, 710052, 760770, 887565, 1014360, 1065078, 1183420, 1420104, 1521540, 1775130, 2130156, 2366840, 2662695, 3043080, 3550260, 4260312, 5325390, 7100520, 10650780, 21301560]

約数ペア:

[(1, 21301560), (2, 10650780), (3, 7100520), (4, 5325390), (5, 4260312), (6, 3550260), (7, 3043080), (8, 2662695), (9, 2366840), (10, 2130156), (12, 1775130), (14, 1521540), (15, 1420104), (18, 1183420), (20, 1065078), (21, 1014360), (24, 887565), (28, 760770), (30, 710052), (35, 608616), (36, 591710), (40, 532539), (42, 507180), (45, 473368), (56, 380385), (60, 355026), (63, 338120), (70, 304308), (72, 295855), (79, 269640), (84, 253590), (90, 236684), (105, 202872), (107, 199080), (120, 177513), (126, 169060), (140, 152154), (158, 134820), (168, 126795), (180, 118342), (210, 101436), (214, 99540), (237, 89880), (252, 84530), (280, 76077), (315, 67624), (316, 67410), (321, 66360), (360, 59171), (395, 53928), (420, 50718), (428, 49770), (474, 44940), (504, 42265), (535, 39816), (553, 38520), (630, 33812), (632, 33705), (642, 33180), (711, 29960), (749, 28440), (790, 26964), (840, 25359), (856, 24885), (948, 22470), (963, 22120), (1070, 19908), (1106, 19260), (1185, 17976), (1260, 16906), (1284, 16590), (1422, 14980), (1498, 14220), (1580, 13482), (1605, 13272), (1659, 12840), (1896, 11235), (1926, 11060), (2140, 9954), (2212, 9630), (2247, 9480), (2370, 8988), (2520, 8453), (2568, 8295), (2765, 7704), (2844, 7490), (2996, 7110), (3160, 6741), (3210, 6636), (3318, 6420), (3555, 5992), (3745, 5688), (3852, 5530), (4280, 4977), (4424, 4815), (4494, 4740)]