20668752

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:269

約数の個数: 120

約数和(自身を含む): 63664328

約数和(自身を除く): 42995576

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 61, 72, 78, 104, 117, 122, 144, 156, 181, 183, 208, 234, 244, 312, 362, 366, 468, 488, 543, 549, 624, 724, 732, 793, 936, 976, 1086, 1098, 1448, 1464, 1586, 1629, 1872, 2172, 2196, 2353, 2379, 2896, 2928, 3172, 3258, 4344, 4392, 4706, 4758, 6344, 6516, 7059, 7137, 8688, 8784, 9412, 9516, 11041, 12688, 13032, 14118, 14274, 18824, 19032, 21177, 22082, 26064, 28236, 28548, 33123, 37648, 38064, 42354, 44164, 56472, 57096, 66246, 84708, 88328, 99369, 112944, 114192, 132492, 143533, 169416, 176656, 198738, 264984, 287066, 338832, 397476, 430599, 529968, 574132, 794952, 861198, 1148264, 1291797, 1589904, 1722396, 2296528, 2583594, 3444792, 5167188, 6889584, 10334376, 20668752]

約数ペア:

[(1, 20668752), (2, 10334376), (3, 6889584), (4, 5167188), (6, 3444792), (8, 2583594), (9, 2296528), (12, 1722396), (13, 1589904), (16, 1291797), (18, 1148264), (24, 861198), (26, 794952), (36, 574132), (39, 529968), (48, 430599), (52, 397476), (61, 338832), (72, 287066), (78, 264984), (104, 198738), (117, 176656), (122, 169416), (144, 143533), (156, 132492), (181, 114192), (183, 112944), (208, 99369), (234, 88328), (244, 84708), (312, 66246), (362, 57096), (366, 56472), (468, 44164), (488, 42354), (543, 38064), (549, 37648), (624, 33123), (724, 28548), (732, 28236), (793, 26064), (936, 22082), (976, 21177), (1086, 19032), (1098, 18824), (1448, 14274), (1464, 14118), (1586, 13032), (1629, 12688), (1872, 11041), (2172, 9516), (2196, 9412), (2353, 8784), (2379, 8688), (2896, 7137), (2928, 7059), (3172, 6516), (3258, 6344), (4344, 4758), (4392, 4706)]