20897136

素因数分解:

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

素因数の和:152

約数の個数: 120

約数和(自身を含む): 65672880

約数和(自身を除く): 44775744

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 36, 39, 48, 52, 54, 61, 72, 78, 104, 108, 117, 122, 144, 156, 183, 208, 216, 234, 244, 312, 351, 366, 432, 468, 488, 549, 624, 702, 732, 793, 936, 976, 1098, 1404, 1464, 1586, 1647, 1872, 2196, 2379, 2808, 2928, 3172, 3294, 3721, 4392, 4758, 5616, 6344, 6588, 7137, 7442, 8784, 9516, 11163, 12688, 13176, 14274, 14884, 19032, 21411, 22326, 26352, 28548, 29768, 33489, 38064, 42822, 44652, 48373, 57096, 59536, 66978, 85644, 89304, 96746, 100467, 114192, 133956, 145119, 171288, 178608, 193492, 200934, 267912, 290238, 342576, 386984, 401868, 435357, 535824, 580476, 773968, 803736, 870714, 1160952, 1306071, 1607472, 1741428, 2321904, 2612142, 3482856, 5224284, 6965712, 10448568, 20897136]

約数ペア:

[(1, 20897136), (2, 10448568), (3, 6965712), (4, 5224284), (6, 3482856), (8, 2612142), (9, 2321904), (12, 1741428), (13, 1607472), (16, 1306071), (18, 1160952), (24, 870714), (26, 803736), (27, 773968), (36, 580476), (39, 535824), (48, 435357), (52, 401868), (54, 386984), (61, 342576), (72, 290238), (78, 267912), (104, 200934), (108, 193492), (117, 178608), (122, 171288), (144, 145119), (156, 133956), (183, 114192), (208, 100467), (216, 96746), (234, 89304), (244, 85644), (312, 66978), (351, 59536), (366, 57096), (432, 48373), (468, 44652), (488, 42822), (549, 38064), (624, 33489), (702, 29768), (732, 28548), (793, 26352), (936, 22326), (976, 21411), (1098, 19032), (1404, 14884), (1464, 14274), (1586, 13176), (1647, 12688), (1872, 11163), (2196, 9516), (2379, 8784), (2808, 7442), (2928, 7137), (3172, 6588), (3294, 6344), (3721, 5616), (4392, 4758)]