18661720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:185

約数の個数: 128

約数和(自身を含む): 53706240

約数和(自身を除く): 35044520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 73, 77, 83, 88, 110, 140, 146, 154, 166, 220, 280, 292, 308, 332, 365, 385, 415, 440, 511, 581, 584, 616, 664, 730, 770, 803, 830, 913, 1022, 1162, 1460, 1540, 1606, 1660, 1826, 2044, 2324, 2555, 2905, 2920, 3080, 3212, 3320, 3652, 4015, 4088, 4565, 4648, 5110, 5621, 5810, 6059, 6391, 6424, 7304, 8030, 9130, 10220, 11242, 11620, 12118, 12782, 16060, 18260, 20440, 22484, 23240, 24236, 25564, 28105, 30295, 31955, 32120, 36520, 42413, 44968, 48472, 51128, 56210, 60590, 63910, 66649, 84826, 112420, 121180, 127820, 133298, 169652, 212065, 224840, 242360, 255640, 266596, 333245, 339304, 424130, 466543, 533192, 666490, 848260, 933086, 1332980, 1696520, 1866172, 2332715, 2665960, 3732344, 4665430, 9330860, 18661720]

約数ペア:

[(1, 18661720), (2, 9330860), (4, 4665430), (5, 3732344), (7, 2665960), (8, 2332715), (10, 1866172), (11, 1696520), (14, 1332980), (20, 933086), (22, 848260), (28, 666490), (35, 533192), (40, 466543), (44, 424130), (55, 339304), (56, 333245), (70, 266596), (73, 255640), (77, 242360), (83, 224840), (88, 212065), (110, 169652), (140, 133298), (146, 127820), (154, 121180), (166, 112420), (220, 84826), (280, 66649), (292, 63910), (308, 60590), (332, 56210), (365, 51128), (385, 48472), (415, 44968), (440, 42413), (511, 36520), (581, 32120), (584, 31955), (616, 30295), (664, 28105), (730, 25564), (770, 24236), (803, 23240), (830, 22484), (913, 20440), (1022, 18260), (1162, 16060), (1460, 12782), (1540, 12118), (1606, 11620), (1660, 11242), (1826, 10220), (2044, 9130), (2324, 8030), (2555, 7304), (2905, 6424), (2920, 6391), (3080, 6059), (3212, 5810), (3320, 5621), (3652, 5110), (4015, 4648), (4088, 4565)]