21447720

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2837}}^1$

素因数の和:2864

約数の個数: 128

約数和(自身を含む): 81734400

約数和(自身を除く): 60286680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2837, 3780, 5674, 7560, 8511, 11348, 14185, 17022, 19859, 22696, 25533, 28370, 34044, 39718, 42555, 51066, 56740, 59577, 68088, 76599, 79436, 85110, 99295, 102132, 113480, 119154, 127665, 153198, 158872, 170220, 178731, 198590, 204264, 238308, 255330, 297885, 306396, 340440, 357462, 382995, 397180, 476616, 510660, 536193, 595770, 612792, 714924, 765990, 794360, 893655, 1021320, 1072386, 1191540, 1429848, 1531980, 1787310, 2144772, 2383080, 2680965, 3063960, 3574620, 4289544, 5361930, 7149240, 10723860, 21447720]

約数ペア:

[(1, 21447720), (2, 10723860), (3, 7149240), (4, 5361930), (5, 4289544), (6, 3574620), (7, 3063960), (8, 2680965), (9, 2383080), (10, 2144772), (12, 1787310), (14, 1531980), (15, 1429848), (18, 1191540), (20, 1072386), (21, 1021320), (24, 893655), (27, 794360), (28, 765990), (30, 714924), (35, 612792), (36, 595770), (40, 536193), (42, 510660), (45, 476616), (54, 397180), (56, 382995), (60, 357462), (63, 340440), (70, 306396), (72, 297885), (84, 255330), (90, 238308), (105, 204264), (108, 198590), (120, 178731), (126, 170220), (135, 158872), (140, 153198), (168, 127665), (180, 119154), (189, 113480), (210, 102132), (216, 99295), (252, 85110), (270, 79436), (280, 76599), (315, 68088), (360, 59577), (378, 56740), (420, 51066), (504, 42555), (540, 39718), (630, 34044), (756, 28370), (840, 25533), (945, 22696), (1080, 19859), (1260, 17022), (1512, 14185), (1890, 11348), (2520, 8511), (2837, 7560), (3780, 5674)]