20791890

素因数分解:

$2^1\times 3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:238

約数の個数: 160

約数和(自身を含む): 67605120

約数和(自身を除く): 46813230

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 30, 35, 38, 42, 45, 54, 57, 63, 70, 81, 90, 95, 105, 114, 126, 133, 135, 162, 171, 189, 190, 193, 210, 266, 270, 285, 315, 342, 378, 386, 399, 405, 513, 567, 570, 579, 630, 665, 798, 810, 855, 945, 965, 1026, 1134, 1158, 1197, 1330, 1351, 1539, 1710, 1737, 1890, 1930, 1995, 2394, 2565, 2702, 2835, 2895, 3078, 3474, 3591, 3667, 3990, 4053, 5130, 5211, 5670, 5790, 5985, 6755, 7182, 7334, 7695, 8106, 8685, 10422, 10773, 11001, 11970, 12159, 13510, 15390, 15633, 17370, 17955, 18335, 20265, 21546, 22002, 24318, 25669, 26055, 31266, 33003, 35910, 36477, 36670, 40530, 51338, 52110, 53865, 55005, 60795, 66006, 72954, 77007, 78165, 99009, 107730, 109431, 110010, 121590, 128345, 154014, 156330, 165015, 182385, 198018, 218862, 231021, 256690, 297027, 330030, 364770, 385035, 462042, 495045, 547155, 594054, 693063, 770070, 990090, 1094310, 1155105, 1386126, 1485135, 2079189, 2310210, 2970270, 3465315, 4158378, 6930630, 10395945, 20791890]

約数ペア:

[(1, 20791890), (2, 10395945), (3, 6930630), (5, 4158378), (6, 3465315), (7, 2970270), (9, 2310210), (10, 2079189), (14, 1485135), (15, 1386126), (18, 1155105), (19, 1094310), (21, 990090), (27, 770070), (30, 693063), (35, 594054), (38, 547155), (42, 495045), (45, 462042), (54, 385035), (57, 364770), (63, 330030), (70, 297027), (81, 256690), (90, 231021), (95, 218862), (105, 198018), (114, 182385), (126, 165015), (133, 156330), (135, 154014), (162, 128345), (171, 121590), (189, 110010), (190, 109431), (193, 107730), (210, 99009), (266, 78165), (270, 77007), (285, 72954), (315, 66006), (342, 60795), (378, 55005), (386, 53865), (399, 52110), (405, 51338), (513, 40530), (567, 36670), (570, 36477), (579, 35910), (630, 33003), (665, 31266), (798, 26055), (810, 25669), (855, 24318), (945, 22002), (965, 21546), (1026, 20265), (1134, 18335), (1158, 17955), (1197, 17370), (1330, 15633), (1351, 15390), (1539, 13510), (1710, 12159), (1737, 11970), (1890, 11001), (1930, 10773), (1995, 10422), (2394, 8685), (2565, 8106), (2702, 7695), (2835, 7334), (2895, 7182), (3078, 6755), (3474, 5985), (3591, 5790), (3667, 5670), (3990, 5211), (4053, 5130)]