81511710

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{659}}^1$

素因数の和:726

約数の個数: 128

約数和(自身を含む): 243302400

約数和(自身を除く): 161790690

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 31, 35, 38, 42, 57, 62, 70, 93, 95, 105, 114, 133, 155, 186, 190, 210, 217, 266, 285, 310, 399, 434, 465, 570, 589, 651, 659, 665, 798, 930, 1085, 1178, 1302, 1318, 1330, 1767, 1977, 1995, 2170, 2945, 3255, 3295, 3534, 3954, 3990, 4123, 4613, 5890, 6510, 6590, 8246, 8835, 9226, 9885, 12369, 12521, 13839, 17670, 19770, 20429, 20615, 23065, 24738, 25042, 27678, 37563, 40858, 41230, 46130, 61287, 61845, 62605, 69195, 75126, 87647, 102145, 122574, 123690, 125210, 138390, 143003, 175294, 187815, 204290, 262941, 286006, 306435, 375630, 388151, 429009, 438235, 525882, 612870, 715015, 776302, 858018, 876470, 1164453, 1314705, 1430030, 1940755, 2145045, 2328906, 2629410, 2717057, 3881510, 4290090, 5434114, 5822265, 8151171, 11644530, 13585285, 16302342, 27170570, 40755855, 81511710]

約数ペア:

[(1, 81511710), (2, 40755855), (3, 27170570), (5, 16302342), (6, 13585285), (7, 11644530), (10, 8151171), (14, 5822265), (15, 5434114), (19, 4290090), (21, 3881510), (30, 2717057), (31, 2629410), (35, 2328906), (38, 2145045), (42, 1940755), (57, 1430030), (62, 1314705), (70, 1164453), (93, 876470), (95, 858018), (105, 776302), (114, 715015), (133, 612870), (155, 525882), (186, 438235), (190, 429009), (210, 388151), (217, 375630), (266, 306435), (285, 286006), (310, 262941), (399, 204290), (434, 187815), (465, 175294), (570, 143003), (589, 138390), (651, 125210), (659, 123690), (665, 122574), (798, 102145), (930, 87647), (1085, 75126), (1178, 69195), (1302, 62605), (1318, 61845), (1330, 61287), (1767, 46130), (1977, 41230), (1995, 40858), (2170, 37563), (2945, 27678), (3255, 25042), (3295, 24738), (3534, 23065), (3954, 20615), (3990, 20429), (4123, 19770), (4613, 17670), (5890, 13839), (6510, 12521), (6590, 12369), (8246, 9885), (8835, 9226)]