51431380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1$

素因数の和:414

約数の個数: 144

約数和(自身を含む): 148006656

約数和(自身を除く): 96575276

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 130, 140, 143, 154, 182, 196, 220, 245, 260, 286, 308, 364, 367, 385, 455, 490, 539, 572, 637, 715, 734, 770, 910, 980, 1001, 1078, 1274, 1430, 1468, 1540, 1820, 1835, 2002, 2156, 2548, 2569, 2695, 2860, 3185, 3670, 4004, 4037, 4771, 5005, 5138, 5390, 6370, 7007, 7340, 8074, 9542, 10010, 10276, 10780, 12740, 12845, 14014, 16148, 17983, 19084, 20020, 20185, 23855, 25690, 28028, 28259, 33397, 35035, 35966, 40370, 47710, 51380, 52481, 56518, 66794, 70070, 71932, 80740, 89915, 95420, 104962, 113036, 133588, 140140, 141295, 166985, 179830, 197813, 209924, 233779, 262405, 282590, 333970, 359660, 367367, 395626, 467558, 524810, 565180, 667940, 734734, 791252, 935116, 989065, 1049620, 1168895, 1469468, 1836835, 1978130, 2337790, 2571569, 3673670, 3956260, 4675580, 5143138, 7347340, 10286276, 12857845, 25715690, 51431380]

約数ペア:

[(1, 51431380), (2, 25715690), (4, 12857845), (5, 10286276), (7, 7347340), (10, 5143138), (11, 4675580), (13, 3956260), (14, 3673670), (20, 2571569), (22, 2337790), (26, 1978130), (28, 1836835), (35, 1469468), (44, 1168895), (49, 1049620), (52, 989065), (55, 935116), (65, 791252), (70, 734734), (77, 667940), (91, 565180), (98, 524810), (110, 467558), (130, 395626), (140, 367367), (143, 359660), (154, 333970), (182, 282590), (196, 262405), (220, 233779), (245, 209924), (260, 197813), (286, 179830), (308, 166985), (364, 141295), (367, 140140), (385, 133588), (455, 113036), (490, 104962), (539, 95420), (572, 89915), (637, 80740), (715, 71932), (734, 70070), (770, 66794), (910, 56518), (980, 52481), (1001, 51380), (1078, 47710), (1274, 40370), (1430, 35966), (1468, 35035), (1540, 33397), (1820, 28259), (1835, 28028), (2002, 25690), (2156, 23855), (2548, 20185), (2569, 20020), (2695, 19084), (2860, 17983), (3185, 16148), (3670, 14014), (4004, 12845), (4037, 12740), (4771, 10780), (5005, 10276), (5138, 10010), (5390, 9542), (6370, 8074), (7007, 7340)]