21665880

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{743}}^1$

素因数の和:772

約数の個数: 112

約数和(自身を含む): 73187280

約数和(自身を除く): 51521400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 729, 743, 810, 972, 1080, 1215, 1458, 1486, 1620, 1944, 2229, 2430, 2916, 2972, 3240, 3645, 3715, 4458, 4860, 5832, 5944, 6687, 7290, 7430, 8916, 9720, 11145, 13374, 14580, 14860, 17832, 20061, 22290, 26748, 29160, 29720, 33435, 40122, 44580, 53496, 60183, 66870, 80244, 89160, 100305, 120366, 133740, 160488, 180549, 200610, 240732, 267480, 300915, 361098, 401220, 481464, 541647, 601830, 722196, 802440, 902745, 1083294, 1203660, 1444392, 1805490, 2166588, 2407320, 2708235, 3610980, 4333176, 5416470, 7221960, 10832940, 21665880]

約数ペア:

[(1, 21665880), (2, 10832940), (3, 7221960), (4, 5416470), (5, 4333176), (6, 3610980), (8, 2708235), (9, 2407320), (10, 2166588), (12, 1805490), (15, 1444392), (18, 1203660), (20, 1083294), (24, 902745), (27, 802440), (30, 722196), (36, 601830), (40, 541647), (45, 481464), (54, 401220), (60, 361098), (72, 300915), (81, 267480), (90, 240732), (108, 200610), (120, 180549), (135, 160488), (162, 133740), (180, 120366), (216, 100305), (243, 89160), (270, 80244), (324, 66870), (360, 60183), (405, 53496), (486, 44580), (540, 40122), (648, 33435), (729, 29720), (743, 29160), (810, 26748), (972, 22290), (1080, 20061), (1215, 17832), (1458, 14860), (1486, 14580), (1620, 13374), (1944, 11145), (2229, 9720), (2430, 8916), (2916, 7430), (2972, 7290), (3240, 6687), (3645, 5944), (3715, 5832), (4458, 4860)]