21881640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{137}}^1$

素因数の和:184

約数の個数: 128

約数和(自身を含む): 72731520

約数和(自身を除く): 50849880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 121, 132, 137, 165, 220, 242, 264, 274, 330, 363, 411, 440, 484, 548, 605, 660, 685, 726, 822, 968, 1096, 1210, 1320, 1331, 1370, 1452, 1507, 1644, 1815, 2055, 2420, 2662, 2740, 2904, 3014, 3288, 3630, 3993, 4110, 4521, 4840, 5324, 5480, 6028, 6655, 7260, 7535, 7986, 8220, 9042, 10648, 12056, 13310, 14520, 15070, 15972, 16440, 16577, 18084, 19965, 22605, 26620, 30140, 31944, 33154, 36168, 39930, 45210, 49731, 53240, 60280, 66308, 79860, 82885, 90420, 99462, 132616, 159720, 165770, 180840, 182347, 198924, 248655, 331540, 364694, 397848, 497310, 547041, 663080, 729388, 911735, 994620, 1094082, 1458776, 1823470, 1989240, 2188164, 2735205, 3646940, 4376328, 5470410, 7293880, 10940820, 21881640]

約数ペア:

[(1, 21881640), (2, 10940820), (3, 7293880), (4, 5470410), (5, 4376328), (6, 3646940), (8, 2735205), (10, 2188164), (11, 1989240), (12, 1823470), (15, 1458776), (20, 1094082), (22, 994620), (24, 911735), (30, 729388), (33, 663080), (40, 547041), (44, 497310), (55, 397848), (60, 364694), (66, 331540), (88, 248655), (110, 198924), (120, 182347), (121, 180840), (132, 165770), (137, 159720), (165, 132616), (220, 99462), (242, 90420), (264, 82885), (274, 79860), (330, 66308), (363, 60280), (411, 53240), (440, 49731), (484, 45210), (548, 39930), (605, 36168), (660, 33154), (685, 31944), (726, 30140), (822, 26620), (968, 22605), (1096, 19965), (1210, 18084), (1320, 16577), (1331, 16440), (1370, 15972), (1452, 15070), (1507, 14520), (1644, 13310), (1815, 12056), (2055, 10648), (2420, 9042), (2662, 8220), (2740, 7986), (2904, 7535), (3014, 7260), (3288, 6655), (3630, 6028), (3993, 5480), (4110, 5324), (4521, 4840)]