171325840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:261

約数の個数: 160

約数和(自身を含む): 479969280

約数和(自身を除く): 308643440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 71, 80, 112, 124, 139, 140, 142, 155, 217, 248, 278, 280, 284, 310, 355, 434, 496, 497, 556, 560, 568, 620, 695, 710, 868, 973, 994, 1085, 1112, 1136, 1240, 1390, 1420, 1736, 1946, 1988, 2170, 2201, 2224, 2480, 2485, 2780, 2840, 3472, 3892, 3976, 4309, 4340, 4402, 4865, 4970, 5560, 5680, 7784, 7952, 8618, 8680, 8804, 9730, 9869, 9940, 11005, 11120, 15407, 15568, 17236, 17360, 17608, 19460, 19738, 19880, 21545, 22010, 30163, 30814, 34472, 35216, 38920, 39476, 39760, 43090, 44020, 49345, 60326, 61628, 68944, 69083, 77035, 77840, 78952, 86180, 88040, 98690, 120652, 123256, 138166, 150815, 154070, 157904, 172360, 176080, 197380, 241304, 246512, 276332, 301630, 305939, 308140, 344720, 345415, 394760, 482608, 552664, 603260, 611878, 616280, 690830, 789520, 1105328, 1206520, 1223756, 1232560, 1381660, 1529695, 2141573, 2413040, 2447512, 2763320, 3059390, 4283146, 4895024, 5526640, 6118780, 8566292, 10707865, 12237560, 17132584, 21415730, 24475120, 34265168, 42831460, 85662920, 171325840]

約数ペア:

[(1, 171325840), (2, 85662920), (4, 42831460), (5, 34265168), (7, 24475120), (8, 21415730), (10, 17132584), (14, 12237560), (16, 10707865), (20, 8566292), (28, 6118780), (31, 5526640), (35, 4895024), (40, 4283146), (56, 3059390), (62, 2763320), (70, 2447512), (71, 2413040), (80, 2141573), (112, 1529695), (124, 1381660), (139, 1232560), (140, 1223756), (142, 1206520), (155, 1105328), (217, 789520), (248, 690830), (278, 616280), (280, 611878), (284, 603260), (310, 552664), (355, 482608), (434, 394760), (496, 345415), (497, 344720), (556, 308140), (560, 305939), (568, 301630), (620, 276332), (695, 246512), (710, 241304), (868, 197380), (973, 176080), (994, 172360), (1085, 157904), (1112, 154070), (1136, 150815), (1240, 138166), (1390, 123256), (1420, 120652), (1736, 98690), (1946, 88040), (1988, 86180), (2170, 78952), (2201, 77840), (2224, 77035), (2480, 69083), (2485, 68944), (2780, 61628), (2840, 60326), (3472, 49345), (3892, 44020), (3976, 43090), (4309, 39760), (4340, 39476), (4402, 38920), (4865, 35216), (4970, 34472), (5560, 30814), (5680, 30163), (7784, 22010), (7952, 21545), (8618, 19880), (8680, 19738), (8804, 19460), (9730, 17608), (9869, 17360), (9940, 17236), (11005, 15568), (11120, 15407)]