161791520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:235

約数の個数: 144

約数和(自身を含む): 430144344

約数和(自身を除く): 268352824

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 61, 80, 88, 110, 121, 122, 137, 160, 176, 220, 242, 244, 274, 305, 352, 440, 484, 488, 548, 605, 610, 671, 685, 880, 968, 976, 1096, 1210, 1220, 1342, 1370, 1507, 1760, 1936, 1952, 2192, 2420, 2440, 2684, 2740, 3014, 3355, 3872, 4384, 4840, 4880, 5368, 5480, 6028, 6710, 7381, 7535, 8357, 9680, 9760, 10736, 10960, 12056, 13420, 14762, 15070, 16577, 16714, 19360, 21472, 21920, 24112, 26840, 29524, 30140, 33154, 33428, 36905, 41785, 48224, 53680, 59048, 60280, 66308, 66856, 73810, 82885, 83570, 91927, 107360, 118096, 120560, 132616, 133712, 147620, 165770, 167140, 183854, 236192, 241120, 265232, 267424, 295240, 331540, 334280, 367708, 459635, 530464, 590480, 663080, 668560, 735416, 919270, 1011197, 1180960, 1326160, 1337120, 1470832, 1838540, 2022394, 2652320, 2941664, 3677080, 4044788, 5055985, 7354160, 8089576, 10111970, 14708320, 16179152, 20223940, 32358304, 40447880, 80895760, 161791520]

約数ペア:

[(1, 161791520), (2, 80895760), (4, 40447880), (5, 32358304), (8, 20223940), (10, 16179152), (11, 14708320), (16, 10111970), (20, 8089576), (22, 7354160), (32, 5055985), (40, 4044788), (44, 3677080), (55, 2941664), (61, 2652320), (80, 2022394), (88, 1838540), (110, 1470832), (121, 1337120), (122, 1326160), (137, 1180960), (160, 1011197), (176, 919270), (220, 735416), (242, 668560), (244, 663080), (274, 590480), (305, 530464), (352, 459635), (440, 367708), (484, 334280), (488, 331540), (548, 295240), (605, 267424), (610, 265232), (671, 241120), (685, 236192), (880, 183854), (968, 167140), (976, 165770), (1096, 147620), (1210, 133712), (1220, 132616), (1342, 120560), (1370, 118096), (1507, 107360), (1760, 91927), (1936, 83570), (1952, 82885), (2192, 73810), (2420, 66856), (2440, 66308), (2684, 60280), (2740, 59048), (3014, 53680), (3355, 48224), (3872, 41785), (4384, 36905), (4840, 33428), (4880, 33154), (5368, 30140), (5480, 29524), (6028, 26840), (6710, 24112), (7381, 21920), (7535, 21472), (8357, 19360), (9680, 16714), (9760, 16577), (10736, 15070), (10960, 14762), (12056, 13420)]