20991672

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{547}}^1$

素因数の和:613

約数の個数: 96

約数和(自身を含む): 62833680

約数和(自身を除く): 41842008

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 41, 52, 72, 78, 82, 104, 117, 123, 156, 164, 234, 246, 312, 328, 369, 468, 492, 533, 547, 738, 936, 984, 1066, 1094, 1476, 1599, 1641, 2132, 2188, 2952, 3198, 3282, 4264, 4376, 4797, 4923, 6396, 6564, 7111, 9594, 9846, 12792, 13128, 14222, 19188, 19692, 21333, 22427, 28444, 38376, 39384, 42666, 44854, 56888, 63999, 67281, 85332, 89708, 127998, 134562, 170664, 179416, 201843, 255996, 269124, 291551, 403686, 511992, 538248, 583102, 807372, 874653, 1166204, 1614744, 1749306, 2332408, 2623959, 3498612, 5247918, 6997224, 10495836, 20991672]

約数ペア:

[(1, 20991672), (2, 10495836), (3, 6997224), (4, 5247918), (6, 3498612), (8, 2623959), (9, 2332408), (12, 1749306), (13, 1614744), (18, 1166204), (24, 874653), (26, 807372), (36, 583102), (39, 538248), (41, 511992), (52, 403686), (72, 291551), (78, 269124), (82, 255996), (104, 201843), (117, 179416), (123, 170664), (156, 134562), (164, 127998), (234, 89708), (246, 85332), (312, 67281), (328, 63999), (369, 56888), (468, 44854), (492, 42666), (533, 39384), (547, 38376), (738, 28444), (936, 22427), (984, 21333), (1066, 19692), (1094, 19188), (1476, 14222), (1599, 13128), (1641, 12792), (2132, 9846), (2188, 9594), (2952, 7111), (3198, 6564), (3282, 6396), (4264, 4923), (4376, 4797)]